kconfig: Fix warning "‘jump’ may be used uninitialized"

Warning:
In file included from scripts/kconfig/zconf.tab.c:2537:0:
scripts/kconfig/menu.c: In function ‘get_symbol_str’:
scripts/kconfig/menu.c:590:18: warning: ‘jump’ may be used uninitialized in this function [-Wmaybe-uninitialized]
     jump->offset = strlen(r->s);

Simplifies the test logic because (head && local) means (jump != 0)
and makes GCC happy when checking if the jump pointer was initialized.

Signed-off-by: Peter Kümmel <syntheticpp@gmx.net>
Signed-off-by: Michal Marek <mmarek@suse.cz>
[ imported from Linux Kernel, commit 2d5603060967 ]
Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>

diff --git a/scripts/kconfig/menu.c b/scripts/kconfig/menu.c
index a26cc5d2a9b0217d9c3d52bf0dab21b7337e95d2..72c9dba84c5dbd46cb8ae2824a85d54603dbaafe 100644 (file)
--- a/scripts/kconfig/menu.c
+++ b/scripts/kconfig/menu.c
@@ -548,7 +548,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
 {
        int i, j;
        struct menu *submenu[8], *menu, *location = NULL;
-       struct jump_key *jump;
+       struct jump_key *jump = NULL;
 
        str_printf(r, _("Prompt: %s\n"), _(prop->text));
        menu = prop->menu->parent;
@@ -586,7 +586,7 @@ static void get_prompt_str(struct gstr *r, struct property *prop,
                str_printf(r, _("  Location:\n"));
                for (j = 4; --i >= 0; j += 2) {
                        menu = submenu[i];
-                       if (head && location && menu == location)
+                       if (jump && menu == location)
                                jump->offset = strlen(r->s);
                        str_printf(r, "%*c-> %s", j, ' ',
                                   _(menu_get_prompt(menu)));