Comment 1 for bug 765970

Created attachment 501245
patch

nsSimpleUnicharStreamFactory is missing a user defined constructor,
but in nsUnicharInputStream.cpp a const variable of this type is defined.

This is not valid c++. For more information see "Default initialization of
const variable of a class type requires user-defined default constructor" in
http://clang.llvm.org/compatibility.html#c++