[gnome-builder] clang: remove unnecessary \n

[Christian Hergert <chergert src gnome org>]

commit d6343f03d8da8f9bff1b615eea795aa1bb6e6fac
Author: Christian Hergert <chergert redhat com>
Date:   Sat Jan 6 01:51:24 2018 -0800

    clang: remove unnecessary \n

 src/plugins/clang/ide-clang-service.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/plugins/clang/ide-clang-service.c b/src/plugins/clang/ide-clang-service.c
index 2ab8d1e..1726e12 100644
--- a/src/plugins/clang/ide-clang-service.c
+++ b/src/plugins/clang/ide-clang-service.c
@@ -220,13 +220,13 @@ discover_llvm_flags (void)
 
   if (!subprocess)
     {
-      g_warning ("%s\n", error->message);
+      g_warning ("%s", error->message);
       IDE_RETURN (NULL);
     }
 
   if (!g_subprocess_communicate_utf8 (subprocess, NULL, NULL, &stdoutstr, NULL, &error))
     {
-      g_warning ("%s\n", error->message);
+      g_warning ("%s", error->message);
       IDE_RETURN (NULL);
     }