Check argc > 1 (bug fix).

tests/test_cdf_read.c

@@ -13,11 +13,10 @@ printAtts(int vlistID);
 
 int main(int argc, const char **argv)
 {
-  const char *fname = "test.nc";
+  // todo: handle optional arguments here to increase test coverage
+  const char *fname = (argc > 1) ? argv[1] : "test.nc";
+
   int countMissingValues = 1;
-  /* todo: handle optional arguments here to increase test coverage */
-  if (argc)
-    fname = argv[1];
 
   int streamID = streamOpenRead(fname);
   if (streamID < 0)

tests/test_cdf_write.c

@@ -25,12 +25,10 @@ compute_curvilinear(double *coords_,
 
 int main(int argc, const char **argv)
 {
-  /* todo: handle optional arguments here to increase test coverage */
-  const char *fname = "test.nc";
-  if (argc > 1)
-    fname = argv[1];
-  int streamID = streamOpenWrite(fname, CDI_FILETYPE_NC);
+  // todo: handle optional arguments here to increase test coverage
+  const char *fname = (argc > 1) ? argv[1] : "test.nc";
 
+  int streamID = streamOpenWrite(fname, CDI_FILETYPE_NC);
   if ( streamID < 0 )
     {
       fprintf(stderr, "Open failed on %s: %s\n", fname,