Make the Dynamic API master switch more clear.
diff --git a/src/dynapi/SDL_dynapi.h b/src/dynapi/SDL_dynapi.h
index df87600..5f4ea8d 100644
--- a/src/dynapi/SDL_dynapi.h
+++ b/src/dynapi/SDL_dynapi.h
@@ -49,7 +49,10 @@
#define SDL_DYNAMIC_API 0
#elif defined(__clang_analyzer__)
#define SDL_DYNAMIC_API 0 /* Turn off for static analysis, so reports are more clear. */
-#else /* everyone else. */
+#endif
+
+/* everyone else. This is where we turn on the API if nothing forced it off. */
+#ifndef SDL_DYNAMIC_API
#define SDL_DYNAMIC_API 1
#endif