Bug 1684163 R[Core:Canvas: WebGL]Suppress warning spam from gfx/angle/
Bug 1684369 R[Core:GFX: Color Management]Use GRAY_SIGNATURE symbolic constant instead of number.
Bug 1684091 R[Core:JavaScript Engine: JIT]Replace MOZ_MUST_USE with [[nodiscard]] in js/src/jit/
Bug 1684380 R[Firefox Build System:General]Fix some error code paths.
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Changes to 4 bugs - 4 fixed.