fixed texture binding and warning on linux

modules/gpu/src/cuda/imgproc.cu

@@ -165,7 +165,7 @@ namespace cv { namespace gpu { namespace impl
         grid.y = divUp(src.rows, threads.y);
 
         cudaChannelFormatDesc desc = cudaCreateChannelDesc<uchar4>();
-        cudaSafeCall( cudaBindTexture2D( 0, tex_meanshift, src.ptr, desc, src.cols * 4, src.rows, src.step ) );
+        cudaSafeCall( cudaBindTexture2D( 0, tex_meanshift, src.ptr, desc, src.cols, src.rows, src.step ) );
 
         meanshift_kernel<<< grid, threads >>>( dst.ptr, dst.step, dst.cols, dst.rows, sp, sr, maxIter, eps );
         cudaSafeCall( cudaThreadSynchronize() );

modules/gpu/src/stereobm_gpu.cpp

@@ -73,7 +73,7 @@ cv::gpu::StereoBM_GPU::StereoBM_GPU()
     : preset(BASIC_PRESET), ndisp(DEFAULT_NDISP), winSize(DEFAULT_WINSZ), avergeTexThreshold(defaultAvgTexThreshold)  {}
 
 cv::gpu::StereoBM_GPU::StereoBM_GPU(int preset_, int ndisparities_, int winSize_)
-    : preset(preset_), ndisp(ndisparities_), winSize(winSize_), avergeTexThreshold(defaultAvgTexThreshold)
+    : ndisp(ndisparities_), winSize(winSize_), preset(preset_), avergeTexThreshold(defaultAvgTexThreshold)
 {
     const int max_supported_ndisp = 1 << (sizeof(unsigned char) * 8);
     CV_Assert(0 < ndisp && ndisp <= max_supported_ndisp);