commit: fixup progress during package removal

also adjust test suite to test for package removal

fixes 6007db9c print: refactor progress printing API

src/commit.c

@@ -441,7 +441,7 @@ int apk_solver_commit_changeset(struct apk_database *db,
 			if (!(db->ctx->flags & APK_SIMULATE) &&
 			    ((change->old_pkg != change->new_pkg) ||
 			     (change->reinstall && pkg_available(db, change->new_pkg)))) {
-				apk_progress_item_start(&prog.prog, apk_progress_weight(prog.done.bytes, prog.done.packages), prog.pkg->size);
+				apk_progress_item_start(&prog.prog, apk_progress_weight(prog.done.bytes, prog.done.packages), prog.pkg ? prog.pkg->size : 0);
 				r = apk_db_install_pkg(db, change->old_pkg, change->new_pkg, &prog.prog) != 0;
 				apk_progress_item_end(&prog.prog);
 			}

test/user/cache-tmpfs.sh

@@ -22,7 +22,7 @@ mkdir -p "$TEST_ROOT"/etc/apk/cache
 $APK add --initdb $TEST_USERMODE --repository "file://localhost/$PWD/repo/index.adb" meta
 
 # reinstall from cache
-rm -rf "$TEST_ROOT"/lib/apk
+$APK del meta
 $APK add --initdb $TEST_USERMODE --no-network --repository "file://localhost/$PWD/repo/index.adb" meta
 
 # make sure fetch still works