xwayland: fix -noTouchPointerEmulation

Passing -noTouchPointerEmulation results in an error about the
flag not being recognized.

Signed-off-by: Simon Ser <contact@emersion.fr>
Fixes: 7d34b1f2b7 ("xwayland: add -noTouchPointerEmulation")

hw/xwayland/xwayland.c

@@ -188,6 +188,7 @@ ddxProcessArgument(int argc, char *argv[], int i)
     }
     else if (strcmp(argv[i], "-noTouchPointerEmulation") == 0) {
         touchEmulatePointer = FALSE;
+        return 1;
     }
 
     return 0;