Save compilation of dummy wrapper.

* Move corresponding check for missing format support to caller.

src/stream_grb.c

@@ -346,7 +346,7 @@ int grbScanTimestep2(stream_t * streamptr)
 static
 int grbScanTimestep(stream_t * streamptr)
 {
-  int status;
+  int status = CDI_EUFTYPE;
   int filetype;
 
   filetype  = streamptr->filetype;
@@ -358,9 +358,11 @@ int grbScanTimestep(stream_t * streamptr)
     }
   else
 #endif
-    {
-      status = gribapiScanTimestep(streamptr);
-    }
+#ifdef HAVE_LIBGRIB_API
+    status = gribapiScanTimestep(streamptr);
+#else
+    Error("Sufficient GRIB support unavailable!");
+#endif
 
   return (status);
 }

src/stream_gribapi.c

@@ -1737,10 +1737,10 @@ int gribapiScanTimestep2(stream_t * streamptr)
 }
 
 
+#if  defined  (HAVE_LIBGRIB_API)
 int gribapiScanTimestep(stream_t * streamptr)
 {
   int rstatus = 0;
-#if  defined  (HAVE_LIBGRIB_API)
   size_t recsize = 0;
   off_t recpos = 0;
   unsigned char *gribbuffer;
@@ -2017,12 +2017,9 @@ int gribapiScanTimestep(stream_t * streamptr)
     }
 
   rstatus = (int)streamptr->ntsteps;
-#else
-  Error("GRIB_API support not compiled in!");
-#endif
-
   return (rstatus);
 }
+#endif
 
 #ifdef gribWarning
 #undef gribWarning