[gnome-builder] pipeline: check _build is a directory and not a symlink

[Christian Hergert <chergert src gnome org>]

commit 41cf077dbd297f67d02ebe6f0f96354ca8f1712d
Author: Christian Hergert <chergert redhat com>
Date:   Fri Aug 3 12:04:31 2018 -0700

    pipeline: check _build is a directory and not a symlink

 src/libide/buildsystem/ide-build-pipeline.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/src/libide/buildsystem/ide-build-pipeline.c b/src/libide/buildsystem/ide-build-pipeline.c
index 1d58eac9c..808043ad3 100644
--- a/src/libide/buildsystem/ide-build-pipeline.c
+++ b/src/libide/buildsystem/ide-build-pipeline.c
@@ -3360,7 +3360,9 @@ can_remove_builddir (IdeBuildPipeline *self)
    */
   context = ide_object_get_context (IDE_OBJECT (self));
   _build = ide_context_build_filename (context, "_build", NULL);
-  if (g_str_equal (_build, self->builddir))
+  if (g_str_equal (_build, self->builddir) &&
+      g_file_test (_build, G_FILE_TEST_IS_DIR) &&
+      !g_file_test (_build, G_FILE_TEST_IS_SYMLINK))
     return TRUE;
 
   g_debug ("%s is not in a cache directory, will not delete it", self->builddir);