Clean up the diagnostic in FieldToProperty pass.
Clean up the diagnostic in FieldToProperty pass.

mono/CppSharp,ddobrev/CppSharp,mono/CppSharp,u255436/CppSharp,u255436/CppSharp,zillemarco/CppSharp,u255436/CppSharp,mono/CppSharp,inordertotest/CppSharp,ktopouzi/CppSharp,u255436/CppSharp,zillemarco/CppSharp,ktopouzi/CppSharp,ktopouzi/CppSharp,ktopouzi/CppSharp,genuinelucifer/CppSharp,mohtamohit/CppSharp,inordertotest/CppSharp,genuinelucifer/CppSharp,mohtamohit/CppSharp,inordertotest/CppSharp,mohtamohit/CppSharp,genuinelucifer/CppSharp,mohtamohit/CppSharp,genuinelucifer/CppSharp,genuinelucifer/CppSharp,ktopouzi/CppSharp,mohtamohit/CppSharp,u255436/CppSharp,ddobrev/CppSharp,zillemarco/CppSharp,mono/CppSharp,mono/CppSharp,zillemarco/CppSharp,ddobrev/CppSharp,ddobrev/CppSharp,inordertotest/CppSharp,inordertotest/CppSharp,ddobrev/CppSharp,zillemarco/CppSharp,mono/CppSharp