fix solidify modifier flipping of rim polygons.

source/blender/modifiers/intern/MOD_solidify.c

@@ -32,7 +32,6 @@
  *  \ingroup modifiers
  */
 
-
 #include "DNA_meshdata_types.h"
 
 #include "MEM_guardedalloc.h"
@@ -51,7 +50,6 @@
 #include "MOD_modifiertypes.h"
 #include "MOD_util.h"
 
-
 typedef struct EdgeFaceRef {
 	int f1; /* init as -1 */
 	int f2;
@@ -614,10 +612,10 @@ static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
 
 			if (fidx >= numFaces) {
 				fidx -= numFaces;
-				flip = 1;
+				flip = TRUE;
 			}
 			else {
-				flip = 0;
+				flip = FALSE;
 			}
 
 			ed = medge + eidx;
@@ -640,7 +638,7 @@ static DerivedMesh *applyModifier(ModifierData *md, Object *ob,
 			CustomData_copy_data(&dm->loopData, &result->loopData, k2, numLoops * 2 + j + 2, 1);
 			CustomData_copy_data(&dm->loopData, &result->loopData, k1, numLoops * 2 + j + 3, 1);
 
-			if (flip) {
+			if (flip == FALSE) {
 				ml[j].v = ed->v1;
 				ml[j++].e = eidx;