gvc++: [nfc] align storage-class declarations to Graphviz standard in GVContext.h

diff --git a/lib/gvc++/GVContext.h b/lib/gvc++/GVContext.h
index 62d10edb5311143be11679590387d4665a8fa2d7..e7e893c6528735f776fe59a19d73e3033f242608 100644 (file)
--- a/lib/gvc++/GVContext.h
+++ b/lib/gvc++/GVContext.h
@@ -10,7 +10,9 @@
 #else
 #define GVCONTEXT_API __declspec(dllimport)
 #endif
-#else
+#endif
+
+#ifndef GVCONTEXT_API
 #define GVCONTEXT_API /* nothing */
 #endif