fix for some errors reported by http://clang.blenderheads.org/trunk/ in r50384.

- when renderlayers could not be found in save_render_result_tile() blender would crash.
- RE_engine_end_result() / rna end_result() didn't set result argument as required.
... also some style cleanup.

1 files changed, 2 insertions, 1 deletions

diff --git a/source/blender/makesrna/intern/rna_render.c b/source/blender/makesrna/intern/rna_render.c
index a755e130bb7..d2e4e8edbfb 100644
--- a/source/blender/makesrna/intern/rna_render.c
+++ b/source/blender/makesrna/intern/rna_render.c
@@ -317,7 +317,7 @@ static void rna_def_render_engine(BlenderRNA *brna)
 	RNA_def_property_flag(prop, PROP_REQUIRED);
 	prop = RNA_def_int(func, "h", 0, 0, INT_MAX, "Height", "", 0, INT_MAX);
 	RNA_def_property_flag(prop, PROP_REQUIRED);
-	prop = RNA_def_string(func, "layer", "", 0, "Layer", "Single layer to get render result for");
+	RNA_def_string(func, "layer", "", 0, "Layer", "Single layer to get render result for");  /* NULL ok here */
 	prop = RNA_def_pointer(func, "result", "RenderResult", "Result", "");
 	RNA_def_function_return(func, prop);
 
@@ -327,6 +327,7 @@ static void rna_def_render_engine(BlenderRNA *brna)
 
 	func = RNA_def_function(srna, "end_result", "RE_engine_end_result");
 	prop = RNA_def_pointer(func, "result", "RenderResult", "Result", "");
+	RNA_def_property_flag(prop, PROP_REQUIRED);
 	prop = RNA_def_boolean(func, "cancel", 0, "Cancel", "Don't merge back results");
 	RNA_def_property_flag(prop, PROP_REQUIRED);