Android: resolve symlinks in SDL_AndroidGetInternalStoragePath (thanks Henrique Gemignani and cigumo!)

Fixes issues on modern Android versions when the path is used in code that explicitly doesn't follow symlinks (such as PHYSFS_mkdir).

src/core/android/SDL_android.c

@@ -2029,10 +2029,14 @@ const char * SDL_AndroidGetInternalStoragePath(void)
             return NULL;
         }
 
-        /* path = fileObject.getAbsolutePath(); */
+        /* path = fileObject.getCanonicalPath(); */
         mid = (*env)->GetMethodID(env, (*env)->GetObjectClass(env, fileObject),
-                "getAbsolutePath", "()Ljava/lang/String;");
+                "getCanonicalPath", "()Ljava/lang/String;");
         pathString = (jstring)(*env)->CallObjectMethod(env, fileObject, mid);
+        if (Android_JNI_ExceptionOccurred(SDL_FALSE)) {
+            LocalReferenceHolder_Cleanup(&refs);
+            return NULL;
+        }
 
         path = (*env)->GetStringUTFChars(env, pathString, NULL);
         s_AndroidInternalFilesPath = SDL_strdup(path);