Fix a major typo.

Nicolas, this is probably the cause of the failures you were seeing.

llvm-svn: 73770

1 files changed, 1 insertions, 1 deletions

diff --git a/llvm/include/llvm/System/Mutex.h b/llvm/include/llvm/System/Mutex.h
index 2a70ba013a0..0003ef881c8 100644
--- a/llvm/include/llvm/System/Mutex.h
+++ b/llvm/include/llvm/System/Mutex.h
@@ -89,7 +89,7 @@ namespace llvm
       explicit SmartMutex(bool recursive = true) : MutexImpl(recursive) { }
       
       bool acquire() {
-        if (!mt_only && llvm_is_multithreaded())
+        if (!mt_only || llvm_is_multithreaded())
           return MutexImpl::acquire();
         return true;
       }