gvc: [nfc] remove useless default extern declaration of functions in gvc.h

diff --git a/lib/gvc/gvc.h b/lib/gvc/gvc.h
index 850b20ff2ef15c630fd8cd0273089956c3a37372..a756ab7aed274553fb16e6135fb1fb73946c905c 100644 (file)
--- a/lib/gvc/gvc.h
+++ b/lib/gvc/gvc.h
@@ -28,7 +28,7 @@ extern "C" {
 #endif
 
 #ifndef GVC_API
-#define GVC_API extern
+#define GVC_API /* nothing */
 #endif
        
 #define LAYOUT_DONE(g) (agbindrec(g, "Agraphinfo_t", 0, TRUE) && GD_drawing(g))