Update main.cpp

Author: soly-olf

jni/main.cpp

@@ -1,6 +1,7 @@
 #include <jni.h>
 #include <android/log.h>
 #include <ucontext.h>
+#include <pthread.h>
 
 #include "main.h"
 #include "game/game.h"
@@ -237,4 +238,4 @@ uint32_t GetTickCount()
 	struct timeval tv;
 	gettimeofday(&tv, nullptr);
 	return (tv.tv_sec*1000+tv.tv_usec/1000);
-}
+}