libcupsfilters, implicitclass, parallel: Added missing newlines at error messages

Author: tillkamppeter

backend/implicitclass.c

@@ -413,7 +413,7 @@ main(int  argc,				/* I - Number of command-line args */
     }
   } else if (argc != 1) {
     fprintf(stderr,
-	    "Usage: %s job-id user title copies options [file]",
+	    "Usage: %s job-id user title copies options [file]\n",
 	    argv[0]);
     return (CUPS_BACKEND_FAILED);
   }

backend/parallel.c

@@ -100,7 +100,7 @@ main(int  argc,				/* I - Number of command-line arguments (6 or 7) */
   }
   else if (argc < 6 || argc > 7)
   {
-    fprintf(stderr, "Usage: %s job-id user title copies options [file]",
+    fprintf(stderr, "Usage: %s job-id user title copies options [file]\n",
             argv[0]);
     return (CUPS_BACKEND_FAILED);
   }

cupsfilters/filter.c

@@ -132,7 +132,7 @@ filterCUPSWrapper(
 
   if (argc < 6 || argc > 7)
   {
-    fprintf(stderr, "Usage: %s job-id user title copies options [file]",
+    fprintf(stderr, "Usage: %s job-id user title copies options [file]\n",
 	    argv[0]);
     return (1);
   }