videoio(v4l): fix code indentation, tabs

modules/videoio/src/cap_v4l.cpp

@@ -690,7 +690,7 @@ static int _capture_V4L2 (CvCaptureCAM_V4L *capture)
 
     unsigned int buffer_number = capture->bufferSize;
 
-   try_again:
+try_again:
 
     capture->req.count = buffer_number;
     capture->req.type = V4L2_BUF_TYPE_VIDEO_CAPTURE;
@@ -1014,13 +1014,13 @@ move_411_block(int yTL, int yTR, int yBL, int yBR, int u, int v,
     int r, g, b;
 
     g = guScale * u + gvScale * v;
-//  if (force_rgb) {
-//      r = buScale * u;
-//      b = rvScale * v;
-//  } else {
+    //  if (force_rgb) {
+    //      r = buScale * u;
+    //      b = rvScale * v;
+    //  } else {
     r = rvScale * v;
     b = buScale * u;
-//  }
+    //  }
 
     yTL *= yScale; yTR *= yScale;
     yBL *= yScale; yBR *= yScale;
@@ -1325,7 +1325,7 @@ static int init_done = 0;
   Each entry at index x in the table represents the codeword
   present at the MSB of byte x.
 
-*/
+ */
 static void sonix_decompress_init(void)
 {
     int i;
@@ -1403,7 +1403,7 @@ static void sonix_decompress_init(void)
   Returns 0 if the operation was successful.
   Returns <0 if operation failed.
 
-*/
+ */
 static int sonix_decompress(int width, int height, unsigned char *inp, unsigned char *outp)
 {
     int row, col;