How to remove this warning from MPLAB C18 Compiler??

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/* Main.c file generated by New Project wizard
 *
 * Created:   Fri Feb 21 2014
 * Processor: PIC18F4520
 * Compiler:  MPLAB C18
 */
 
#include <p18f4520.h>
#include <stdlib.h> 
#include <delays.h> 
#include <string.h>
 
/****************PIN DETAILS****************/
#define LCD_data PORTC          // LCD Data port
#define LCD_C7  PORTCbits.RC7   // LCD C7/Busy Flag
#define LCD_rs  PORTDbits.RD0   // LCD Register Select
#define LCD_en  PORTDbits.RD1   // LCD Enable
#define LCD_rw  PORTDbits.RD2   // LCD Read/Write
/*******************************************/
 
/******************FUNCTION PROTOTYPE*******************/
void LCD_init(void);
void LCD_busy(void);
void LCD_command(unsigned char var);
void LCD_senddata(unsigned char var);
void LCD_sendstring(unsigned char *var);
/*******************************************/
 
void main()
 { 
TRISC = 0x00;
LATC = 0x00;
TRISD = 0x00;
LATD = 0x00;
 
  
  
   LCD_init();
    
    //LCD_senddata('W');
    //Delay10KTCYx (25);
    LCD_sendstring("LCD Tutorial");
    //Delay10KTCYx (25);
 }
 
/******************FUNCTION PROTOTYPE*******************/
/* Initialization by internal Reset Circuit */
void LCD_init() 
{ 
LCD_data = 0x38;    //Function set: 2 Line, 8-bit, 5x7 dots 
LCD_rs = 0;         //Selected command register 
LCD_rw = 0;         //We are writing in data register 
LCD_en = 1;         //Enable H->L 
LCD_en = 0; 
LCD_busy();         //Wait for LCD to process the command 
 
LCD_data = 0x0F;    //Display on, Curser blinking command 
LCD_rs = 0;         //Selected command register 
LCD_rw = 0;         //We are writing in data register
LCD_en = 1;         //Enable H->L 
LCD_en = 0; 
LCD_busy();         //Wait for LCD to process the command 
 
LCD_data = 0x01;    //Clear LCD 
LCD_rs = 0;         //Selected command register 
LCD_rw = 0;         //We are writing in data register 
LCD_en = 1;         //Enable H->L 
LCD_en = 0; 
LCD_busy();         //Wait for LCD to process the command 
 
LCD_data = 0x06;    //Entry mode, auto increment with no shift 
LCD_rs = 0;         //Selected command register 
LCD_rw = 0;         //We are writing in data register 
LCD_en = 1;         //Enable H->L 
LCD_busy(); 
}
 
/* Steps to read busy flag */
void LCD_busy() 
{ 
LCD_C7 = 1;     //Make C7th bit of LCD as i/p 
LCD_en = 1;     //Make port pin as o/p 
LCD_rs = 0;     //Selected command register 
LCD_rw = 1;     //We are reading
 
while(LCD_C7 > 0)   {   //read busy flag again and again till it becomes 0
 
LCD_en = 0;             //Enable H->L 
LCD_en = 1; 
        } 
}
 
/* Sending Commands to LCD */
void LCD_command(unsigned char var) 
{ 
LCD_data = var;     //Function set: 2 Line, 8-bit, 5x7 dots 
LCD_rs = 0;         //Selected command register 
LCD_rw = 0;         //We are writing in instruction register 
LCD_en = 1;         //Enable H->L 
LCD_en = 0; 
LCD_busy();         //Wait for LCD to process the command 
} 
// Using the above function is really simple 
// var will carry the command for LCD 
// e.g. 
// 
// LCD_command(0x01);
/* Setting cursor position on LCD */
/*LCD_command(0x83);*/
 
 
/* Sending Data to LCD */
void LCD_senddata(unsigned char var) 
{ 
LCD_data = var;     //Function set: 2 Line, 8-bit, 5x7 dots 
LCD_rs = 1;         //Selected data register 
LCD_rw = 0;         //We are writing 
LCD_en = 1;         //Enable H->L 
LCD_en = 0; 
LCD_busy();         //Wait for LCD to process the command 
}
// Using the above function 
// we will pass the character to display as argument to function 
// e.g. 
// 
// LCD_senddata('A');
 
/* if we have a string to send to LCD? */
void LCD_sendstring(unsigned char *var) 
{ 
 
while(*var) {           //till string ends 
LCD_senddata(*var);     //send characters one by one 
var++;
 
} 
}
// Using the above function
// we will pass the string directly to the function 
// e.g. 
// 
// LCD_sendstring("LCD Tutorial");
/*******************************************/