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stylo: Use saturating subtraction for script level

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Manish Goregaokar 2017-09-06 14:49:09 -07:00 • committed by Manish Goregaokar
parent c063ff88de
commit e4de8d10a6
1 changed files with 1 additions and 1 deletions
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2
components/style/properties/gecko.mako.rs
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@ -2341,7 +2341,7 @@ fn static_assert() {
pub fn calculate_script_level_size(&self, parent: &Self, device: &Device) -> (Au, Au) {
use std::cmp;
let delta = self.gecko.mScriptLevel - parent.gecko.mScriptLevel;
let delta = self.gecko.mScriptLevel.saturating_sub(parent.gecko.mScriptLevel);
let parent_size = Au(parent.gecko.mSize);
let parent_unconstrained_size = Au(parent.gecko.mScriptUnconstrainedSize);