CMake: fix linking with WITH_SDL_DYNLOAD

While this was only needed in 'source/blender/python',
add to ghost to avoid problems in the future.

intern/ghost/CMakeLists.txt

@@ -142,7 +142,11 @@ if(WITH_HEADLESS OR WITH_GHOST_SDL)
     list(APPEND INC_SYS
       ${SDL_INCLUDE_DIR}
     )
-    if(NOT WITH_SDL_DYNLOAD)
+    if(WITH_SDL_DYNLOAD)
+      list(APPEND LIB
+        extern_sdlew
+      )
+    else()
       list(APPEND LIB
         ${SDL_LIBRARY}
       )

source/blender/python/intern/CMakeLists.txt

@@ -255,7 +255,11 @@ if(WITH_SDL)
   list(APPEND INC_SYS
     ${SDL_INCLUDE_DIR}
   )
-  if(NOT WITH_SDL_DYNLOAD)
+  if(WITH_SDL_DYNLOAD)
+    list(APPEND LIB
+      extern_sdlew
+    )
+  else()
     list(APPEND LIB
       ${SDL_LIBRARY}
     )