Fix crash on Wasapi and avoid to set default parameters from the proxy...

Fix crash on Wasapi and avoid to set default parameters from the proxy defaults while creating account parameters from a configuration.

• bctoolbox!258 (merged)

• belcard!38 (merged)

• belle-sip!316 (merged)

• belr!58 (merged)

• bzrtp!51 (merged)

• liblinphone!2624 (merged)

• lime!93 (merged)

• mediastreamer2!848 (merged)

• mswasapi!37 (merged)

• ortp!151 (merged)

• postquantumcryptoengine!13 (merged)