Wrongly converted error messages

[drinking-code]

So, I got a weird error:
101,110,100,32,112,97,116,116,101,114,110,32,119,105,116,104,32,117,110,109,97,116,99,104,101,100,32,112,97,114,101,110,116,104,101,115,105,115.
After some tinkering I found out that if converted to hex and then to utf-8 characters it spells "end pattern with unmatched parenthesis".

That means that probably the convertUTF8BytesFromPtrToString function doesn't work properly and converts bytes to decimal numbers instead of utf8 characters.https://github.com/NeekSandhu/onigasm/blob/cf4da28454f09a2ff74f1c008b3d619218ca2dbe/src/OnigScanner.ts#L42

To recreate, use the OnigScanner with a pattern that has a capturing group missing the closing brackets. e.g. (\s