Changed function parseUrlEncodedForm to accept form/query strings tha…

…t contain no equal sign or an incomplete key value pair instead of throwing an exception. Keys not terminated with an equal sign will be parsed with an empty value string.

source/vibe/http/form.d

@@ -49,7 +49,10 @@ void parseUrlEncodedForm(string str, ref string[string] params)
 	while(str.length > 0){
 		// name part
 		auto idx = str.indexOf('=');
-		enforce(idx > 0, "Expected ident=value.");
+		if( idx == -1 ) {
+			params[urlDecode(str[0 .. $])] = "";
+			return;
+		}
 		string name = urlDecode(str[0 .. idx]);
 		str = str[idx+1 .. $];