cgraph: [nfc] align storage-class declarations to Graphviz standard in cgraph.h

diff --git a/lib/cgraph/cgraph.h b/lib/cgraph/cgraph.h
index 87936f74a36d495091176856356d78d1f39f1d35..208037b5b6859c393b40602c05270f384260cd85 100644 (file)
--- a/lib/cgraph/cgraph.h
+++ b/lib/cgraph/cgraph.h
@@ -23,7 +23,9 @@ extern "C" {
 #else
 #define CGRAPH_API __declspec(dllimport)
 #endif
-#else
+#endif
+
+#ifndef CGRAPH_API
 #define CGRAPH_API /* nothing */
 #endif