Don't use EGLRenderer if not built with SDL 2.0.10+

app/streaming/video/ffmpeg-renderers/eglvid.cpp

@@ -182,6 +182,16 @@ bool EGLRenderer::initialize(PDECODER_PARAMETERS params)
         return false;
     }
 
+    // It's not safe to attempt to opportunistically create a GLES2
+    // renderer prior to 2.0.10. If GLES2 isn't available, SDL will
+    // attempt to dereference a null pointer and crash Moonlight.
+    // https://bugzilla.libsdl.org/show_bug.cgi?id=4350
+    // https://hg.libsdl.org/SDL/rev/84618d571795
+    if (!SDL_VERSION_ATLEAST(2, 0, 10)) {
+        EGL_LOG(Error, "Not supported until SDL 2.0.10");
+        return false;
+    }
+
     /*
      * Create a dummy renderer in order to craft an accelerated SDL Window.
      * Request opengl ES 3.0 context, otherwise it will SIGSEGV