BaseTools: Fix DevicePath tool build failure issue

BaseTools: Fix DevicePath tool build failure issue

Fix the DevicePath tool build failure that was introduced by
the fixes: 22130dcd98b4 ("Basetools: turn off gcc12 warning").
Failure cases are:
1. clang 13.1.6 on macOS
2. gcc5.4

Reported-by: Rebecca Cran <rebecca@bsdio.com>
Reported-by: Yuwei Chen <yuwei.chen@intel.com>
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
Cc: Liming Gao <gaoliming@byosoft.com.cn>
Cc: Yuwei Chen <yuwei.chen@intel.com>
Cc: Rebecca Cran <rebecca@bsdio.com>
Reviewed-by: Yuwei Chen <yuwei.chen@intel.com>