Some strings to store ID names were too small, could cause stack corruption.

corrected these and replaced 'sizeof(((ID *)NULL)->name)-2' with 'MAX_ID_NAME-2'.

source/blender/editors/interface/interface_utils.c

@@ -52,7 +52,7 @@ uiBut *uiDefAutoButR(uiBlock *block, PointerRNA *ptr, PropertyRNA *prop, int ind
 {
 	uiBut *but=NULL;
 	const char *propname= RNA_property_identifier(prop);
-	char prop_item[sizeof(((IDProperty *)NULL)->name)+4]; /* size of the ID prop name + room for [""] */
+	char prop_item[MAX_IDPROP_NAME+4]; /* size of the ID prop name + room for [""] */
 	int arraylen= RNA_property_array_length(ptr, prop);
 
 	/* support for custom props */