Couple of bugs while compiling against ptlib 2.12.x

[Sharath]

While compiling the h323plus 1.26 library against ptlib 2.12.9, I ran into couple of bugs.

Project: h323plus
Filename: mediafmt.cxx
Line: 667

The iterator is being used without initialization.




Project: simple
Filename: main.cxx
Line: 534


The code refers to an undefined variable ipVar.