MFH: Fixed bug #41390 (Clarify error message with invalid protocol scheme)

NEWS

@@ -10,6 +10,8 @@ PHP                                                                        NEWS
 - Fixed altering $this via argument named "this". (Dmitry)
 - Fixed PHP CLI to use the php.ini from the binary location. (Hannes)
 - Fixed segfault in strripos(). (Tony, Joxean Koret)
+- Fixed bug #41390 (Clarify error message with invalid protocol scheme).
+  (Scott)
 - Fixed bug #41378 (fastcgi protocol lacks support for Reason-Phrase in 
   "Status:" header). (anight at eyelinkmedia dot com, Dmitry)
 - Fixed bug #41374 (wholetext concats values of wrong nodes). (Rob)

main/streams/userspace.c

@@ -458,8 +458,8 @@ PHP_FUNCTION(stream_wrapper_register)
 			if (zend_hash_exists(php_stream_get_url_stream_wrappers_hash(), protocol, protocol_len + 1)) {
 				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Protocol %s:// is already defined.", protocol);
 			} else {
-				/* Should never happen */
-				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to register wrapper class %s to %s://", classname, protocol);
+				/* Hash doesn't exist so it must have been an invalid protocol scheme */
+				php_error_docref(NULL TSRMLS_CC, E_WARNING, "Invalid protocol scheme specified. Unable to register wrapper class %s to %s://", classname, protocol);
 			}
 		}
 	} else {