Avoid creating char[] allocations (#2340)
Avoid creating char[] allocations (#2340)

This was allocation 0.3% of all allocations in some traces.
jeffkl/msbuild,Microsoft/msbuild,cdmihai/msbuild,jeffkl/msbuild,sean-gilliam/msbuild,mono/msbuild,AndyGerlicher/msbuild,AndyGerlicher/msbuild,chipitsine/msbuild,mono/msbuild,mono/msbuild,AndyGerlicher/msbuild,cdmihai/msbuild,rainersigwald/msbuild,chipitsine/msbuild,rainersigwald/msbuild,sean-gilliam/msbuild,Microsoft/msbuild,rainersigwald/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,chipitsine/msbuild,mono/msbuild,jeffkl/msbuild,sean-gilliam/msbuild,cdmihai/msbuild,jeffkl/msbuild,AndyGerlicher/msbuild,Microsoft/msbuild,rainersigwald/msbuild,Microsoft/msbuild,chipitsine/msbuild