Fixed bug issue #4 (forgotten case of DATE_TIME_ORIGINAL is absent).

src/exifdate.c

@@ -208,10 +208,22 @@ int main(int argc, char **argv)
               }
               break;
             case EDT_MODIFY_ED:
+              fprintf(stdout, "modify\n");
               break;
           }
         } else fprintf(stdout, "%s: No date and time information exists in exif.\n",
                        fn_name[i]);
+      } else {
+        switch(mode) {
+          case EDT_DISPLAY:
+          case EDT_MODIFY_FO:
+            fprintf(stdout, "%s: No time date information found in EXIF.\n",
+                    fn_name[i]);
+            break;
+          case EDT_MODIFY_ED:
+            fprintf(stdout, "modify\n");
+            break;
+        }
       }
       exif_data_unref(ef);
     }