draw: init draw->pt.middle.general = NULL just to be safe

This field should be null from the initial calloc() of the draw context,
but let's be safe (and improve understanding of the code).

diff --git a/src/gallium/auxiliary/draw/draw_pt.c b/src/gallium/auxiliary/draw/draw_pt.c
index b7a9982..a60a3b2 100644 (file)
--- a/src/gallium/auxiliary/draw/draw_pt.c
+++ b/src/gallium/auxiliary/draw/draw_pt.c
@@ -142,6 +142,8 @@ boolean draw_pt_init( struct draw_context *draw )
 
 #if DRAW_LLVM
    draw->pt.middle.general = draw_pt_fetch_pipeline_or_emit_llvm( draw );
+#else
+   draw->pt.middle.general = NULL;
 #endif
 
    if (!draw->pt.middle.general)