libmemunreachable: clang-format everything

clang-format -i --sort-includes $(find . -name "*.cpp" -o -name "*.h")

Test: builds
Change-Id: Ia8e0677fe7f3f26dddba3a851cd2dfab9f14e421
diff --git a/libmemunreachable/LineBuffer.h b/libmemunreachable/LineBuffer.h
index a015c46..604836b 100644
--- a/libmemunreachable/LineBuffer.h
+++ b/libmemunreachable/LineBuffer.h
@@ -33,4 +33,4 @@
   size_t bytes_ = 0;
 };
 
-#endif // _LIBMEMUNREACHABLE_LINE_BUFFER_H
+#endif  // _LIBMEMUNREACHABLE_LINE_BUFFER_H