Switch to using WAPP_PLATFORM_CPP instead of __cplusplus

src/common/aliases/aliases.h

@@ -1,6 +1,7 @@
 #ifndef ALIASES_H
 #define ALIASES_H
 
+#include "../platform/platform.h"
 #include <stdint.h>
 
 #define c8 uint8_t
@@ -28,10 +29,10 @@
 #define internal static
 #define persistent static
 
-#ifdef __cplusplus
+#ifdef WAPP_PLATFORM_CPP
 #define class_mem static
 #define BEGIN_C_LINKAGE extern "C" {
 #define END_C_LINKAGE }
-#endif // __cplusplus
+#endif // WAPP_PLATFORM_CPP
 
 #endif // !ALIASES_H