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-rw-r--r--src/pong.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/src/pong.h b/src/pong.h
index 74a208a..a9adf41 100644
--- a/src/pong.h
+++ b/src/pong.h
@@ -51,6 +51,7 @@ extern int Difficulty;
 extern bool GameGoing;
 extern SDL_atomic_t Ticks;
 extern char VersionString[256];
+extern SDL_mutex *AudioInitializing;
 
 void enemy(struct Players *Enemy, struct Balls ball);
 void ball(Rectangle *Player, Rectangle *Enemy, struct Balls *Ball, int *PlayerScore, int *EnemyScore);