add LinphoneProxyConfig.getError() java/jni

coreapi/linphonecore_jni.cc

@@ -1430,6 +1430,10 @@ extern "C" jboolean Java_org_linphone_core_LinphoneProxyConfigImpl_publishEnable
 	return (jboolean)linphone_proxy_config_publish_enabled((LinphoneProxyConfig*)proxyCfg);
 }
 
+extern "C" jint Java_org_linphone_core_LinphoneProxyConfigImpl_getError(JNIEnv*  env,jobject thiz,jlong ptr) {
+	return linphone_proxy_config_get_error((LinphoneProxyConfig *) ptr);
+}
+
 //Auth Info
 
 extern "C" jlong Java_org_linphone_core_LinphoneAuthInfoImpl_newLinphoneAuthInfo(JNIEnv* env

java/common/org/linphone/core/LinphoneProxyConfig.java

@@ -151,4 +151,10 @@ public interface LinphoneProxyConfig {
 	 * @param e164 phone number
 	 */
 	public int lookupCCCFromE164(String e164);
+	
+	/**
+	 * Return reason error code.
+	 * @return reason code.
+	 */
+	public Reason getError();
 }

java/impl/org/linphone/core/LinphoneProxyConfigImpl.java

@@ -158,4 +158,9 @@ class LinphoneProxyConfigImpl implements LinphoneProxyConfig {
 	public int lookupCCCFromE164(String e164) {
 		return lookupCCCFromE164(nativePtr, e164);
 	}
+	private native int getReason(long nativeptr);
+	@Override
+	public Reason getError() {
+		return Reason.fromInt(getReason(nativePtr));
+	}
 }