[vlc-devel] [PATCH] Use range in gaussian blur

[Kaarlo Räihä]

Since there is a lower limit for sigma it is better to try to force it.
0.01 was chosen for SIGMA_MIN since it is the smallest value for usage that
I have seen  and 4096.0 for SIGMA_MAX is just large value I selected (and
sigma that large isn't really useful for video filtering, but someone might
have some user cases).

Second patch just changes for loops to be more C99
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