Remove superfluous trailing white space from C files

site_ansto/hardsup/Digital/utility.c

@@ -33,7 +33,7 @@ char* make_timestamp(const struct timeval* tv)
 
 double time_diff(struct timeval* later, struct timeval* earlier)
 {
-  double delta = 
+  double delta =
     ((double) later->tv_sec - (double) earlier->tv_sec)
     + 0.000001 * ((double) later->tv_usec - (double) earlier->tv_usec);
   return delta;