fix single process build for Android

lib/CAndroidVMHelper.cpp

@@ -10,6 +10,8 @@
 #include "CAndroidVMHelper.h"
 
 #ifdef VCMI_ANDROID
+VCMI_LIB_NAMESPACE_BEGIN
+
 static JavaVM * vmCache = nullptr;
 
 /// cached java classloader so that we can find our classes from other threads
@@ -109,4 +111,5 @@ void CAndroidVMHelper::initClassloader(void * baseEnv)
 	vcmiFindClassMethod = env->GetMethodID(classLoaderClass, "findClass", "(Ljava/lang/String;)Ljava/lang/Class;");
 }
 
+VCMI_LIB_NAMESPACE_END
 #endif