libfdisk: make the library usable with tests

We don't have completely initialized all label drivers in the tests, so
make the code more robust.

Signed-off-by: Karel Zak <kzak@redhat.com>

diff --git a/libfdisk/src/context.c b/libfdisk/src/context.c
index e77274bae19ac2223d697a3921e05c88b92f3235..6ede3e4687f7ee9f4c0d5bd98c1ccb1c417ee802 100644 (file)
--- a/libfdisk/src/context.c
+++ b/libfdisk/src/context.c
@@ -77,7 +77,8 @@ struct fdisk_label *fdisk_context_get_label(struct fdisk_context *cxt, const cha
                return cxt->label;
 
        for (i = 0; i < cxt->nlabels; i++)
-               if (strcmp(cxt->labels[i]->name, name) == 0)
+               if (cxt->labels[i]
+                   && strcmp(cxt->labels[i]->name, name) == 0)
                        return cxt->labels[i];
 
        DBG(LABEL, dbgprint("failed to found %s label driver\n", name));