test: Fixed CMake to build testcameraminimal correctly on WinRT.

test/CMakeLists.txt

@@ -395,7 +395,7 @@ add_sdl_test_executable(testtimer NONINTERACTIVE NONINTERACTIVE_ARGS --no-intera
 add_sdl_test_executable(testurl SOURCES testurl.c)
 add_sdl_test_executable(testver NONINTERACTIVE SOURCES testver.c)
 add_sdl_test_executable(testcamera SOURCES testcamera.c)
-add_sdl_test_executable(testcameraminimal SOURCES testcameraminimal.c)
+add_sdl_test_executable(testcameraminimal MAIN_CALLBACKS SOURCES testcameraminimal.c)
 add_sdl_test_executable(testviewport NEEDS_RESOURCES TESTUTILS SOURCES testviewport.c)
 add_sdl_test_executable(testwm SOURCES testwm.c)
 add_sdl_test_executable(testyuv NONINTERACTIVE NONINTERACTIVE_ARGS "--automated" NEEDS_RESOURCES TESTUTILS SOURCES testyuv.c testyuv_cvt.c)