fixing warnings

modules/java/gen_java.py

@@ -360,6 +360,7 @@ ManualFuncs = {
             'cpp_code' :
 """
 // C++: minMaxLoc(Mat src, double* minVal, double* maxVal=0, Point* minLoc=0, Point* maxLoc=0, InputArray mask=noArray())
+JNIEXPORT jdoubleArray JNICALL Java_org_opencv_core_Core_n_1minMaxLocManual (JNIEnv*, jclass, jlong, jlong);
 
 JNIEXPORT jdoubleArray JNICALL Java_org_opencv_core_Core_n_1minMaxLocManual
   (JNIEnv* env, jclass, jlong src_nativeObj, jlong mask_nativeObj)
@@ -430,6 +431,7 @@ JNIEXPORT jdoubleArray JNICALL Java_org_opencv_core_Core_n_1minMaxLocManual
             'cpp_code' :
 """
 // C++: Size getTextSize(const string& text, int fontFace, double fontScale, int thickness, int* baseLine);
+JNIEXPORT jdoubleArray JNICALL Java_org_opencv_core_Core_n_1getTextSize (JNIEnv*, jclass, jstring, jint, jdouble, jint, jintArray);
 
 JNIEXPORT jdoubleArray JNICALL Java_org_opencv_core_Core_n_1getTextSize
   (JNIEnv* env, jclass, jstring text, jint fontFace, jdouble fontScale, jint thickness, jintArray baseLine)

modules/java/src/cpp/Mat.cpp

@@ -2505,10 +2505,10 @@ JNIEXPORT jint JNICALL Java_org_opencv_core_Mat_nGetD
 }
 
 JNIEXPORT jdoubleArray JNICALL Java_org_opencv_core_Mat_nGet
-    (JNIEnv* env, jclass, jlong self, jint row, jint col, jint count);
+    (JNIEnv* env, jclass, jlong self, jint row, jint col);
 
 JNIEXPORT jdoubleArray JNICALL Java_org_opencv_core_Mat_nGet
-    (JNIEnv* env, jclass, jlong self, jint row, jint col, jint count)
+    (JNIEnv* env, jclass, jlong self, jint row, jint col)
 {
     try {
         LOGD("Mat::nGet()");