Fix for bug #10734: mirror modifier crash with no axis

enabled for mirroring around.

diff --git a/source/blender/blenkernel/intern/modifier.c b/source/blender/blenkernel/intern/modifier.c
index 0cd6035b9dc53e8571913be8d9d75871dad9bb15..ca95d9edc0695d89dd0d020bc4f7f1201ee3a221 100644 (file)
--- a/source/blender/blenkernel/intern/modifier.c
+++ b/source/blender/blenkernel/intern/modifier.c
@@ -1506,7 +1506,8 @@ static DerivedMesh *mirrorModifier_applyModifier(
 
        result = mirrorModifier__doMirror(mmd, ob, derivedData, 0);
 
-       CDDM_calc_normals(result);
+       if(result != derivedData)
+               CDDM_calc_normals(result);
        
        return result;
 }