Bug 1478587 - Make ReportUnterminatedRegExp accept an int32_t unit, not a CharT unit. r=arai

--HG--
extra : rebase_source : 002be06902da912281dcb0d853b5204485b1b379

js/src/frontend/TokenStream.cpp

@@ -2165,7 +2165,7 @@ TokenStreamSpecific<CharT, AnyCharsAccess>::regexpLiteral(TokenStart start, Toke
         return this->appendCodePointToCharBuffer(codePoint);
     };
 
-    auto ReportUnterminatedRegExp = [this](CharT unit) {
+    auto ReportUnterminatedRegExp = [this](int32_t unit) {
         this->ungetCodeUnit(unit);
         this->error(JSMSG_UNTERMINATED_REGEXP);
     };