Bug 1317637 - Replace integer literals which are cast to bool in gfx/. r=jrmuizel

MozReview-Commit-ID: 12hwCenQ3qL

--HG--
extra : rebase_source : 8eef835f2e9d0a1b40b54ee0b2a14f8dfc37e726

gfx/thebes/gfxCoreTextShaper.cpp

@@ -597,7 +597,7 @@ gfxCoreTextShaper::SetGlyphsFromRun(gfxShapedText *aShapedText,
             // collect all glyphs in a list to be assigned to the first char;
             // there must be at least one in the clump, and we already measured its advance,
             // hence the placement of the loop-exit test and the measurement of the next glyph
-            while (1) {
+            while (true) {
                 gfxTextRun::DetailedGlyph *details = detailedGlyphs.AppendElement();
                 details->mGlyphID = glyphs[glyphStart];
                 details->mXOffset = 0;