Reduce scope of variable.

Author: Nekto89

src/lib_json/json_reader.cpp

@@ -706,8 +706,8 @@ bool Reader::decodeUnicodeCodePoint(Token& token,
       return addError(
           "additional six characters expected to parse unicode surrogate pair.",
           token, current);
-    unsigned int surrogatePair;
     if (*(current++) == '\\' && *(current++) == 'u') {
+      unsigned int surrogatePair;
       if (decodeUnicodeEscapeSequence(token, current, end, surrogatePair)) {
         unicode = 0x10000 + ((unicode & 0x3FF) << 10) + (surrogatePair & 0x3FF);
       } else
@@ -1726,8 +1726,8 @@ bool OurReader::decodeUnicodeCodePoint(Token& token,
       return addError(
           "additional six characters expected to parse unicode surrogate pair.",
           token, current);
-    unsigned int surrogatePair;
     if (*(current++) == '\\' && *(current++) == 'u') {
+      unsigned int surrogatePair;
       if (decodeUnicodeEscapeSequence(token, current, end, surrogatePair)) {
         unicode = 0x10000 + ((unicode & 0x3FF) << 10) + (surrogatePair & 0x3FF);
       } else