StringBuilder.Clear can alloc
StringBuilder.Clear can alloc

When setting .Length = 0; only clear if keeping the SB

mono/msbuild,mono/msbuild,cdmihai/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,Microsoft/msbuild,sean-gilliam/msbuild,rainersigwald/msbuild,sean-gilliam/msbuild,jeffkl/msbuild,chipitsine/msbuild,Microsoft/msbuild,mono/msbuild,cdmihai/msbuild,sean-gilliam/msbuild,jeffkl/msbuild,AndyGerlicher/msbuild,Microsoft/msbuild,mono/msbuild,AndyGerlicher/msbuild,cdmihai/msbuild,rainersigwald/msbuild,rainersigwald/msbuild,AndyGerlicher/msbuild,chipitsine/msbuild,jeffkl/msbuild,Microsoft/msbuild,chipitsine/msbuild,jeffkl/msbuild,chipitsine/msbuild,rainersigwald/msbuild,AndyGerlicher/msbuild