Bug 121183 - error for {return;} isn't helpful, patch by Rich Dougherty <rich@rd.gen.nz>, r=brendan

js/src/js.msg

@@ -201,8 +201,8 @@ MSG_DEF(JSMSG_CATCH_AFTER_GENERAL,    118, 0, JSEXN_SYNTAXERR, "catch after unco
 MSG_DEF(JSMSG_CATCH_WITHOUT_TRY,      119, 0, JSEXN_SYNTAXERR, "catch without try")
 MSG_DEF(JSMSG_FINALLY_WITHOUT_TRY,    120, 0, JSEXN_SYNTAXERR, "finally without try")
 MSG_DEF(JSMSG_LABEL_NOT_FOUND,        121, 0, JSEXN_SYNTAXERR, "label not found")
-MSG_DEF(JSMSG_TOUGH_BREAK,            122, 0, JSEXN_SYNTAXERR, "invalid break")
-MSG_DEF(JSMSG_BAD_CONTINUE,           123, 0, JSEXN_SYNTAXERR, "invalid continue")
+MSG_DEF(JSMSG_TOUGH_BREAK,            122, 0, JSEXN_SYNTAXERR, "unlabeled break must be inside loop or switch")
+MSG_DEF(JSMSG_BAD_CONTINUE,           123, 0, JSEXN_SYNTAXERR, "continue must be inside loop")
 MSG_DEF(JSMSG_BAD_RETURN_OR_YIELD,    124, 1, JSEXN_SYNTAXERR, "{0} not in function")
 MSG_DEF(JSMSG_BAD_LABEL,              125, 0, JSEXN_SYNTAXERR, "invalid label")
 MSG_DEF(JSMSG_DUPLICATE_LABEL,        126, 0, JSEXN_SYNTAXERR, "duplicate label")