ui: Drop useless null tests in parse_keyboard_layout()

Spotted by Coverity.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

ui/keymaps.c

diff --git a/ui/keymaps.c b/ui/keymaps.c
index 9625d82..f373cc5 100644
--- a/ui/keymaps.c
+++ b/ui/keymaps.c
@@ -127,25 +127,27 @@
                     //		    fprintf(stderr, "Warning: unknown keysym %s\n", line);
 		} else {
 		    const char *rest = end_of_keysym + 1;
-		    char *rest2;
-		    int keycode = strtol(rest, &rest2, 0);
+                    int keycode = strtol(rest, NULL, 0);
 
-		    if (rest && strstr(rest, "numlock")) {
+                    if (strstr(rest, "numlock")) {
 			add_to_key_range(&k->keypad_range, keycode);
 			add_to_key_range(&k->numlock_range, keysym);
 			//fprintf(stderr, "keypad keysym %04x keycode %d\n", keysym, keycode);
 		    }
 
-		    if (rest && strstr(rest, "shift"))
+                    if (strstr(rest, "shift")) {
 			keycode |= SCANCODE_SHIFT;
-		    if (rest && strstr(rest, "altgr"))
+                    }
+                    if (strstr(rest, "altgr")) {
 			keycode |= SCANCODE_ALTGR;
-		    if (rest && strstr(rest, "ctrl"))
+                    }
+                    if (strstr(rest, "ctrl")) {
 			keycode |= SCANCODE_CTRL;
+                    }
 
 		    add_keysym(line, keysym, keycode, k);
 
-		    if (rest && strstr(rest, "addupper")) {
+                    if (strstr(rest, "addupper")) {
 			char *c;
 			for (c = line; *c; c++)
 			    *c = qemu_toupper(*c);