Fix build in Visual Studio
Fix build in Visual Studio

cubieb/json-c,Nzbuu/json-c,chenha0/json-c,Amineahd/json-c,rgerhards/json-c,chenha0/json-c,rgerhards/json-c,Nzbuu/json-c,cubieb/json-c,rgerhards/json-c,chenha0/json-c,Amineahd/json-c,cubieb/json-c,Nzbuu/json-c,Nzbuu/json-c,Amineahd/json-c