Fix bug in the adjustment to existing lines.

Before (if only the second line was reformatted):
void f() {}
          void g() {}

After:
void f() {}
void g() {}

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@174978 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Format/FormatTest.cpp b/unittests/Format/FormatTest.cpp
index e9520b6..f1cef2a 100644
--- a/unittests/Format/FormatTest.cpp
+++ b/unittests/Format/FormatTest.cpp
@@ -2660,6 +2660,9 @@
             "  }", format("  {\n"
                           "a;\n"
                           "  }", 4, 2, getLLVMStyle()));
+  EXPECT_EQ("void f() {}\n"
+            "void g() {}", format("void f() {}\n"
+                                  "void g() {}", 13, 0, getLLVMStyle()));
 }
 
 } // end namespace tooling