clang-cl: Ignore /Fd silently

While it's true that we don't create the PDB as requested on the command
line, this is a well-documented limitation. Warning about it doesn't
help people using legacy build systems with clang-cl, and it makes the
clang-cl self-host very noisy.

llvm-svn: 230527
diff --git a/clang/test/Driver/cl-options.c b/clang/test/Driver/cl-options.c
index 1287017..e7ace35 100644
--- a/clang/test/Driver/cl-options.c
+++ b/clang/test/Driver/cl-options.c
@@ -190,6 +190,7 @@
 // RUN:    /cgthreads8 \
 // RUN:    /d2Zi+ \
 // RUN:    /errorReport:foo \
+// RUN:    /Fdfoo \
 // RUN:    /FS \
 // RUN:    /Gd \
 // RUN:    /GF \
@@ -237,7 +238,6 @@
 // RUN:     /FAu \
 // RUN:     /favor:blend \
 // RUN:     /FC \
-// RUN:     /Fdfoo \
 // RUN:     /Fifoo \
 // RUN:     /Fmfoo \
 // RUN:     /FpDebug\main.pch \