V4L/DVB (6147): Pwc: Fix a broken debug message

Commit 85237f20 introduced the
following warning (with CONFIG_USB_PWC_DEBUG=y):
drivers/media/video/pwc/pwc-if.c: In function "pwc_video_close":
drivers/media/video/pwc/pwc-if.c:1211: warning: "i" may be used uninitialized in this function

This is true, and can cause a broken debug message to be logged.
Here's a fix.
Signed-off-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>

drivers/media/video/pwc/pwc-if.c

@@ -1243,7 +1243,7 @@ static int pwc_video_close(struct inode *inode, struct file *file)
 				PWC_ERROR("Failed to power down camera (%d)\n", i);
 		}
 		pdev->vopen--;
-		PWC_DEBUG_OPEN("<< video_close() vopen=%d\n", i);
+		PWC_DEBUG_OPEN("<< video_close() vopen=%d\n", pdev->vopen);
 	} else {
 		pwc_cleanup(pdev);
 		/* Free memory (don't set pdev to 0 just yet) */