Merge /u/xypron/gnu-efi/ branch xtoi into master

https://sourceforge.net/p/gnu-efi/code/merge-requests/15/

lib/str.c

@@ -274,7 +274,7 @@ xtoi (
     CHAR16      c;
 
     // skip preceeding white space
-    while (*str && *str == ' ') {
+    while (*str == ' ') {
         str += 1;
     }