Fix warning for Android NDK compiler: "function declaration without a prototype is deprecated in all versions of C [-Wstrict-prototypes]"

https://stackoverflow.com/questions/42125/warning-error-function-declaration-isnt-a-prototype
In C int foo() and int foo(void) are different functions. int foo() accepts an arbitrary number of arguments, while int foo(void) accepts 0 arguments. In C++ they mean the same thing.

(cherry picked from commit ccade50587)

test/testautomation_surface.c

@@ -81,7 +81,7 @@ void _surfaceTearDown(void *arg)
 /**
  * Helper that clears the test surface
  */
-void _clearTestSurface()
+void _clearTestSurface(void)
 {
     int ret;
     Uint32 color;