fix various places where nativeSetupJNI being treated as returning int

android-project/app/src/main/java/org/libsdl/app/SDLActivity.java

@@ -1043,7 +1043,7 @@ public class SDLActivity extends Activity implements View.OnSystemUiVisibilityCh
 
     // C functions we call
     public static native String nativeGetVersion();
-    public static native int nativeSetupJNI();
+    public static native void nativeSetupJNI();
     public static native void nativeInitMainThread();
     public static native void nativeCleanupMainThread();
     public static native int nativeRunMain(String library, String function, Object arguments);

android-project/app/src/main/java/org/libsdl/app/SDLAudioManager.java

@@ -117,7 +117,7 @@ class SDLAudioManager {
         }
     }
 
-    static native int nativeSetupJNI();
+    static native void nativeSetupJNI();
 
     static native void nativeRemoveAudioDevice(boolean recording, int deviceId);
 

android-project/app/src/main/java/org/libsdl/app/SDLControllerManager.java

@@ -20,7 +20,7 @@ import android.view.View;
 public class SDLControllerManager
 {
 
-    static native int nativeSetupJNI();
+    static native void nativeSetupJNI();
 
     static native void nativeAddJoystick(int device_id, String name, String desc,
                                                 int vendor_id, int product_id,

src/core/android/SDL_android.c

@@ -198,7 +198,7 @@ JNIEXPORT void JNICALL SDL_JAVA_INTERFACE(onNativeFileDialog)(
 
 static JNINativeMethod SDLActivity_tab[] = {
     { "nativeGetVersion", "()Ljava/lang/String;", SDL_JAVA_INTERFACE(nativeGetVersion) },
-    { "nativeSetupJNI", "()I", SDL_JAVA_INTERFACE(nativeSetupJNI) },
+    { "nativeSetupJNI", "()V", SDL_JAVA_INTERFACE(nativeSetupJNI) },
     { "nativeInitMainThread", "()V", SDL_JAVA_INTERFACE(nativeInitMainThread) },
     { "nativeCleanupMainThread", "()V", SDL_JAVA_INTERFACE(nativeCleanupMainThread) },
     { "nativeRunMain", "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/Object;)I", SDL_JAVA_INTERFACE(nativeRunMain) },
@@ -265,7 +265,7 @@ JNIEXPORT void JNICALL
                                                 jint device_id);
 
 static JNINativeMethod SDLAudioManager_tab[] = {
-    { "nativeSetupJNI", "()I", SDL_JAVA_AUDIO_INTERFACE(nativeSetupJNI) },
+    { "nativeSetupJNI", "()V", SDL_JAVA_AUDIO_INTERFACE(nativeSetupJNI) },
     { "nativeAddAudioDevice", "(ZLjava/lang/String;I)V", SDL_JAVA_AUDIO_INTERFACE(nativeAddAudioDevice) },
     { "nativeRemoveAudioDevice", "(ZI)V", SDL_JAVA_AUDIO_INTERFACE(nativeRemoveAudioDevice) }
 };
@@ -308,7 +308,7 @@ JNIEXPORT void JNICALL SDL_JAVA_CONTROLLER_INTERFACE(nativeRemoveHaptic)(
     jint device_id);
 
 static JNINativeMethod SDLControllerManager_tab[] = {
-    { "nativeSetupJNI", "()I", SDL_JAVA_CONTROLLER_INTERFACE(nativeSetupJNI) },
+    { "nativeSetupJNI", "()V", SDL_JAVA_CONTROLLER_INTERFACE(nativeSetupJNI) },
     { "onNativePadDown", "(II)Z", SDL_JAVA_CONTROLLER_INTERFACE(onNativePadDown) },
     { "onNativePadUp", "(II)Z", SDL_JAVA_CONTROLLER_INTERFACE(onNativePadUp) },
     { "onNativeJoy", "(IIF)V", SDL_JAVA_CONTROLLER_INTERFACE(onNativeJoy) },