Fix haxxer typer

src/hackertyper.c

@@ -31,7 +31,7 @@ int main(int argc, char *argv[]) {
     while (!feof(command_output_fptr)) {
         getchar();
 
-        for (unsigned int i = 0; i < CHARS_TO_WRITE; i++) {
+        for (unsigned int i = 0; i < CHARS_TO_WRITE && !feof(command_output_fptr); i++) {
             current_char = fgetc(command_output_fptr);
             printf("%c", current_char);
         }