music_xmp.cmake: Move static macros into below

Do always define `-DBUILDING_STATIC` (for old versions) and `-DLIBXMP_STATIC` (for recent) macros to fix the linking of the static version of the libxmp. The linking is broken because of the `dllimport()` abuse in the public header that breaks the build and confuses users because of linking errors.

src/codecs/music_xmp.cmake

@@ -34,11 +34,6 @@ if(USE_XMP)
         endif()
 
     elseif(NOT USE_XMP_LITE AND NOT USE_XMP_LITE_ENFORCE)
-        # AudioCodecs package doesn't include lite version at all
-        if(WIN32)
-            list(APPEND SDL_MIXER_DEFINITIONS -DBUILDING_STATIC -DLIBXMP_STATIC)
-        endif()
-
         if(MSVC)
             set(xmplib libxmp-static)
         else()
@@ -85,6 +80,10 @@ if(USE_XMP)
             list(APPEND SDL_MIXER_DEFINITIONS -DMUSIC_XMP_MEMORY_ONLY)
         endif()
 
+        if(WIN32) # Workaround to fix the broken linking of static library, caused by abuse of `dllimport()`
+            list(APPEND SDL_MIXER_DEFINITIONS -DBUILDING_STATIC -DLIBXMP_STATIC)
+        endif()
+
         if(USE_XMP_LITE OR USE_XMP_LITE_ENFORCE)
             appendTrackerFormats("MOD;XM;S3M;IT")
         else()