versioner: fix false positive with functions only available as inlines.

Change-Id: I09cc335b4006c6ceafcbd1bec9e50161f8262942
diff --git a/tools/versioner/tests/inline_unavailable/headers/foo.h b/tools/versioner/tests/inline_unavailable/headers/foo.h
new file mode 100644
index 0000000..6800dd0
--- /dev/null
+++ b/tools/versioner/tests/inline_unavailable/headers/foo.h
@@ -0,0 +1,3 @@
+static int foo() __attribute__((availability(android, introduced = 9))) {
+  return 0;
+}