build.sh: run quilt upgrade before editing patches

build.sh

@@ -46,11 +46,11 @@ EOF
 			SUB_STAGE_QUILT_PATCH_DIR="$(basename "$SUB_STAGE_DIR")-pc"
 			mkdir -p "$SUB_STAGE_QUILT_PATCH_DIR"
 			ln -snf "$SUB_STAGE_QUILT_PATCH_DIR" .pc
+			quilt upgrade
 			if [ -e "${SUB_STAGE_DIR}/${i}-patches/EDIT" ]; then
 				echo "Dropping into bash to edit patches..."
 				bash
 			fi
-			quilt upgrade
 			RC=0
 			quilt push -a || RC=$?
 			case "$RC" in