lib: fix semantic on has_substring on extreme cases
authorJean Privat <jean@pryen.org>
Wed, 29 Oct 2014 01:32:53 +0000 (21:32 -0400)
committerJean Privat <jean@pryen.org>
Wed, 29 Oct 2014 01:32:53 +0000 (21:32 -0400)
commit794079a34ea116757a81f630a27853a513f20b79
treed469bee450fd753b34327e608edff0dccd84ba4d
parent6c2cbe3ed49f60949eb28b3419fb4a8bc64bebe4
lib: fix semantic on has_substring on extreme cases

And avoid illegal access outside the string.

Signed-off-by: Jean Privat <jean@pryen.org>
lib/standard/string.nit