apt-pkg/contrib/sha256.h: use #warning to warn about deprecated header

diff --git a/apt-pkg/contrib/sha256.h b/apt-pkg/contrib/sha256.h
index fe2b30ac265e3d3691943ace328faf42bf5b4891..15146c94870ee6d064d07e8690605e4d88c0fc0c 100644 (file)
--- a/apt-pkg/contrib/sha256.h
+++ b/apt-pkg/contrib/sha256.h
@@ -3,6 +3,6 @@
 
 #include "sha2.h"
 
-#warn "This header is deprecated, please include sha2.h instead"
+#warning "This header is deprecated, please include sha2.h instead"
 
 #endif