Revert r322595: Specify inline for isWhitespace in CommandLine.cpp

The original change was made based on a misunderstanding that
-DCMAKE_BUILD_TYPE=RelWithDebugInfo would produce the same executable
as -DCMAKE_BUILD_TYPE=Release modulo debug info. Turned out that's not
true -- it at least disables some optimizations such as function inlining.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@323161 91177308-0d34-0410-b5e6-96231b3b80d8
1 file changed