Frees an unmanaged string pointer that was allocated using the SecureStringToCoTaskMemUnicode method.
Assemblies: System.Runtime.InteropServices (in System.Runtime.InteropServices.dll)
mscorlib (in mscorlib.dll)
The method first zeros out and then frees unmanaged memory that was allocated using the SecureStringToCoTaskMemUnicode method.
requires full trust for the immediate caller. This member cannot be used by partially trusted or transparent code.