drivers/media/video/usbvision/usbvision-video.c: negative array

[Adrian Bunk <bunk@stusta.de>]

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The Coverity checker spotted that in usbvision_v4l2_read(), the variable 
"frmx" is never assigned any value different from -1, but it's used an 
an array index in "usbvision->frame[frmx]".

cu
Adrian

-- 

       "Is there not promise of rain?" Ling Tan asked suddenly out
        of the darkness. There had been need of rain for many days.
       "Only a promise," Lao Er said.
                                       Pearl S. Buck - Dragon Seed

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