Address -Wreorder warning in Driver.cpp

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@186617 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/Driver.cpp b/lib/Driver/Driver.cpp
index a5910be..0c3f6ca 100644
--- a/lib/Driver/Driver.cpp
+++ b/lib/Driver/Driver.cpp
@@ -48,13 +48,13 @@
                StringRef DefaultTargetTriple,
                StringRef DefaultImageName,
                DiagnosticsEngine &Diags)
-  : Opts(createDriverOptTable()), Diags(Diags),
+  : Opts(createDriverOptTable()), Diags(Diags), Mode(GCCMode),
     ClangExecutable(ClangExecutable), SysRoot(DEFAULT_SYSROOT),
     UseStdLib(true), DefaultTargetTriple(DefaultTargetTriple),
     DefaultImageName(DefaultImageName),
     DriverTitle("clang LLVM compiler"),
     CCPrintOptionsFilename(0), CCPrintHeadersFilename(0),
-    CCLogDiagnosticsFilename(0), Mode(GCCMode),
+    CCLogDiagnosticsFilename(0),
     CCCEcho(false), CCCPrintBindings(false),
     CCPrintOptions(false), CCPrintHeaders(false), CCLogDiagnostics(false),
     CCGenDiagnostics(false), CCCGenericGCCName(""), CheckInputsExist(true),