Code cleanup: No newline at end of file

Some text files were missing a newline at the end of the file.
One has been added.

Also correct file format of windows/tests/inputs.yaml, which
was missed in commit 0f0277e104

AMD-Internal: [CPUPL-2870]
Change-Id: Icb83a4a27033dc0ff325cb84a1cf399e953ec549

gtestsuite/testinghelpers/inc/common/complex_helpers.h

@@ -79,4 +79,4 @@ std::string to_string(const T& x) {
     }
 }
 
-}
+}