[clang-format] Use EXPECT_EQ instead of setting style to a default value. NFC.

Author: mkurdej

clang/unittests/Format/FormatTest.cpp

@@ -16562,7 +16562,7 @@ TEST_F(FormatTest, AlignConsecutiveAssignments) {
                "y = 1;\n",
                Alignment);
 
-  Alignment.ReflowComments = true;
+  EXPECT_EQ(Alignment.ReflowComments, true);
   Alignment.ColumnLimit = 50;
   EXPECT_EQ("int x   = 0;\n"
             "int yy  = 1; /// specificlennospace\n"