module: increase dirs array size by one

With the module upgrades code change, the statically sized dirs array
can now overflow. Increase it's size by one, according to the new
maximum possible usage.

Fixes: bd83c861c0 ("modules: load modules from versioned /var/run dir")
Signed-off-by: Bruce Rogers <brogers@suse.com>
Message-Id: <20200411010746.472295-1-brogers@suse.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

util/module.c

@@ -177,7 +177,7 @@ bool module_load_one(const char *prefix, const char *lib_name)
     char *version_dir;
 #endif
     const char *search_dir;
-    char *dirs[4];
+    char *dirs[5];
     char *module_name;
     int i = 0, n_dirs = 0;
     int ret;