clang-format: Correctly detect multiplication in ctor initializer.

Before:
  Constructor() : a(a), area(width *height) {}

After:
  Constructor() : a(a), area(width * height) {}

llvm-svn: 222010
diff --git a/clang/unittests/Format/FormatTest.cpp b/clang/unittests/Format/FormatTest.cpp
index 31984f6..540dd03 100644
--- a/clang/unittests/Format/FormatTest.cpp
+++ b/clang/unittests/Format/FormatTest.cpp
@@ -5008,6 +5008,7 @@
   verifyIndependentOfContext("int i{a * b};");
   verifyIndependentOfContext("aaa && aaa->f();");
   verifyIndependentOfContext("int x = ~*p;");
+  verifyFormat("Constructor() : a(a), area(width * height) {}");
 
   verifyIndependentOfContext("InvalidRegions[*R] = 0;");