[gnome-builder] clang: don't replay empty lines

[Christian Hergert <chergert src gnome org>]

commit 5d4591bf2a5c0e82acf9bd56acbb56d4fc9ad16a
Author: Christian Hergert <christian hergert me>
Date:   Fri Feb 26 15:53:49 2016 -0800

    clang: don't replay empty lines

 plugins/clang/ide-clang-completion-provider.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/plugins/clang/ide-clang-completion-provider.c b/plugins/clang/ide-clang-completion-provider.c
index 7631521..a1443e0 100644
--- a/plugins/clang/ide-clang-completion-provider.c
+++ b/plugins/clang/ide-clang-completion-provider.c
@@ -168,7 +168,7 @@ ide_clang_completion_provider_can_replay (IdeClangCompletionProvider *self,
   if (self->last_results == NULL)
     return FALSE;
 
-  if (line == NULL || self->last_line == NULL)
+  if (line == NULL || *line == '\0' || self->last_line == NULL)
     return FALSE;
 
   if (!g_str_has_prefix (line, self->last_line))