Coverity DIVIDE_BY_ZERO - CID 10476

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CID: 10476
Checker: DIVIDE_BY_ZERO
Category: No category available
CWE definition: http://cwe.mitre.org/data/definitions/571.html
File: /tmp/buildd/notify-osd-0.9.33/egg/egg-alpha.c
Function: egg_exp_dec_func()
Code snippet:
1011 #endif
1012
1013 timeline = egg_alpha_get_timeline (alpha);
1014 frame = egg_timeline_get_current_frame (timeline);
CID 10476 - DIVIDE_BY_ZERO
Assigning: "n_frames" = "egg_timeline_get_n_frames(timeline)".
On this path, function call "egg_timeline_get_n_frames(timeline)" has return value of 0
1015 n_frames = egg_timeline_get_n_frames (timeline);
1016
CID 10476 - DIVIDE_BY_ZERO
Division by expression "n_frames" which may be zero has undefined behavior
1017 x = (x_alpha_max * (n_frames - frame)) / n_frames;
1018
1019 result = CLAMP (egg_pow2x (x) - 1, 0, EGG_ALPHA_MAX_ALPHA);
1020

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Source file with Coverity annotations.