liuping 2ff4996d05 Fix ambiguous complier error C2666 in vs2017.The '+' opeator may cause ambiguity.Avoid implicit conversion.

2018-12-05 05:55:43 -08:00

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Fix ambiguous complier error C2666 in vs2017.The '+' opeator may cause ambiguity.Avoid implicit conversion.

2018-12-05 05:55:43 -08:00