efi-string: Remove one more |= for bool

This one was missed in #23589.

src/boot/efi/efi-string.c

@@ -193,7 +193,8 @@ static bool efi_fnmatch_internal(const char16_t *p, const char16_t *h, int max_d
                                         p++;
                                         if (*p == '\0')
                                                 return false;
-                                        match |= *p == *h;
+                                        if (*p == *h)
+                                                match = true;
                                         can_range = true;
                                         continue;
                                 }