Fix exif test failure

There are two slightly different error messages for invalid pointers, so
make the pattern slightly less strict to account for both.

Author: nikic

ext/exif/tests/bug60150.phpt

@@ -12,7 +12,7 @@ var_dump(exif_read_data($infile));
 ?>
 ===DONE===
 --EXPECTF--
-Warning: exif_read_data(bug60150.jpg): Process tag(x9003=DateTimeOri): Illegal pointer offset(x%x + x%x = x%x > x%x) in %s on line %d
+Warning: exif_read_data(bug60150.jpg): Process tag(x9003=DateTimeOri): Illegal pointer offset(%s) in %s on line %d
 
 Warning: exif_read_data(bug60150.jpg): Error reading from file: got=x%x(=%d) != itemlen-%d=x%x(=%d) in %s on line %d