[Driver] Update the comment about incompatible sanitizers

Differential Revision: https://reviews.llvm.org/D44371

llvm-svn: 327249
diff --git a/clang/lib/Driver/SanitizerArgs.cpp b/clang/lib/Driver/SanitizerArgs.cpp
index 0f00f67..91dad40 100644
--- a/clang/lib/Driver/SanitizerArgs.cpp
+++ b/clang/lib/Driver/SanitizerArgs.cpp
@@ -348,7 +348,8 @@
   // Enable toolchain specific default sanitizers if not explicitly disabled.
   SanitizerMask Default = TC.getDefaultSanitizers() & ~AllRemove;
 
-  // Disable default sanitizers that are incompatible with the default ones.
+  // Disable default sanitizers that are incompatible with explicitly requested
+  // ones.
   for (auto G : IncompatibleGroups) {
     SanitizerMask Group = G.first;
     if ((Default & Group) && (Kinds & G.second))