Fix use count for deleted, reference counted objects.

[simgear.git] / simgear / structure / SGAtomic.cxx

diff --git a/simgear/structure/SGAtomic.cxx b/simgear/structure/SGAtomic.cxx
index 68fcf7757b2c81ddc621f0bd86758fbc7499905a..71f24ed96eec87d472df866fb18ba5caafc2a447 100644 (file)
--- a/simgear/structure/SGAtomic.cxx
+++ b/simgear/structure/SGAtomic.cxx
@@ -30,8 +30,10 @@
 # include <windows.h>
 #elif defined(GCC_ATOMIC_BUILTINS_FOUND)
 #elif defined(__GNUC__) && defined(__i386__)
-#else
+#elif defined(SGATOMIC_USE_MUTEX)
 # include <simgear/threads/SGGuard.hxx>
+#else
+# error
 #endif
 
 unsigned