Electronic – PIC18F UART transmit not stopping

I am trying out the UART on the PIC18f45k50 for a project but when I try to transmit, it seems that the PIC keeps on transmitting "Hello World" indefinitely. I have tried turning off the transmit enable bit but this doesnt seem to have any effect. I then added the while(1) loop to trap the microcontroller in it to keep it busy however even with this it transmits the data twice before stopping.
I am viewing the transmitted data on my PC with termite and am using an rs232 to usb converter. The code is as follows:

UPDATE: The issue was that when it finishes executing the main method, it restarts the code execution and it repeats twice only when it is reprogrammed.

// Configuration Bits
#pragma config FOSC = INTOSCIO  //OscillatorSelection 
#pragma config WDTEN = OFF      //WatchdogTimerEnablebits 
#pragma config LVP = OFF        //Single-SupplyICSPEnablebit 

#define _XTAL_FREQ 16000000

#include <xc.h>
#include <string.h>
#include <stdint.h>


void USART_Init(long baudrate)
{
    float temp;
    unsigned int Baud_Value = (_XTAL_FREQ - baudrate*16)/(baudrate*16);;
    BRGH = 1;
    TRISC6=0;                       /*Make Tx pin as output*/
    TXSTA1bits.SYNC = 0;                                    //Setting Asynchronous Mode, ie UART
    RCSTA1bits.SPEN = 1;
    temp=Baud_Value;     
    SPBRG=(int)temp;                /*baud rate=9600, SPBRG = (F_CPU  /(64*9600))-1*/
    //TXSTAbits.TXEN=1;                     /*Transmit Enable(TX) enable*/ 
}

 void USART_TxChar(char out)
{        
    while(!TRMT);            /*wait for transmit flag*/
    TXREG=out;                 /*wait for transmit flag to set which indicates TXREG is ready
                                    for another transmission*/ 
        
        
}

void USART_SendString(const char *out)
{
   while(*out!='\0')
   {            
        USART_TxChar(*out);
        out++;
   }
}

void main(void) {
   
    uint32_t dly;
    OSCCONbits.IRCF = 0b111;
    OSCCON2bits.INTSRC = 1;
    OSCCONbits.SCS = 0b10;
    ANSELD = 0; //digital
    TRISDbits.RD1 = 0;
    
    USART_Init(115200 );

    for(dly = 0;dly<100000;dly++);
    USART_TxChar(0x22);           /*Transmit character '"'  */
    USART_SendString("Hello World");    /*Transmit String*/
    USART_TxChar(0x22);           /*Transmit character '"'*/
    for(dly = 0;dly<100000;dly++);
    

    RCSTA1bits.SPEN = 0;
    TXSTA=0x00; 
    while(1){};
    
    return;
}
```