BZ: https://bugzilla.tianocore.org/show_bug.cgi?id=2047
Build raise exception if there is libraryclass
missing in dsc file and --pcd build option is used.
Build should report the missing libraryclass but not
a call stack.
This patch is going to fix it.
Cc: Liming Gao <liming.gao@intel.com>
Signed-off-by: Bob Feng <bob.c.feng@intel.com>
Reviewed-by: Liming Gao <liming.gao@intel.com>
a0792697bc