Fixed Oboe source inclusion.

CMakeLists.txt

@@ -269,9 +269,7 @@ message(STATUS "-----------------------------------------------------")
 message(STATUS "Configuring: openal-soft ${MEGA_OPENAL_VER}")
 message(STATUS "-----------------------------------------------------")
 if(ANDROID)
-	if(NOT OBOE_SOURCE)
-		set(OBOE_SOURCE "${CMAKE_CURRENT_SOURCE_DIR}/libs/oboe")
-	endif()
+	set(OBOE_SOURCE "${CMAKE_CURRENT_SOURCE_DIR}/libs/oboe" CACHE PATH "Oboe Source Code" FORCE)
 	set(ALSOFT_REQUIRE_OBOE ON CACHE BOOL "Require Oboe backend" FORCE)
 	set(ALSOFT_REQUIRE_OPENSL ON CACHE BOOL "Require OpenSL backend" FORCE)
 endif()