And fill the last phlist prepause and newword fields, otherwise they are
detected as undefined:

==483407== Conditional jump or move depends on uninitialised value(s)
==483407==    at 0x488E6AB: Generate (synthesize.c:1228)
==483407==    by 0x488FD94: SpeakNextClause (synthesize.c:1587)
==483407==    by 0x4887F56: Synthesize (speech.c:457)
==483407==    by 0x488884C: sync_espeak_Synth (speech.c:570)
==483407==    by 0x487B270: espeak_Synth (espeak_api.c:90)
==483407==    by 0x10ACA0: main (espeak-ng.c:691)
==483407==  Uninitialised value was created by a client request
==483407==    at 0x4884893: MakePhonemeList (phonemelist.c:155)
==483407==    by 0x4895712: TranslateClause (translate.c:2682)
==483407==    by 0x488FCCF: SpeakNextClause (synthesize.c:1569)
==483407==    by 0x4887F56: Synthesize (speech.c:457)
==483407==    by 0x488884C: sync_espeak_Synth (speech.c:570)
==483407==    by 0x487B270: espeak_Synth (espeak_api.c:90)
==483407==    by 0x10ACA0: main (espeak-ng.c:691)
==483407==
==483407== Conditional jump or move depends on uninitialised value(s)
==483407==    at 0x488E622: Generate (synthesize.c:1211)
==483407==    by 0x488FD94: SpeakNextClause (synthesize.c:1587)
==483407==    by 0x4887F56: Synthesize (speech.c:457)
==483407==    by 0x488884C: sync_espeak_Synth (speech.c:570)
==483407==    by 0x487B270: espeak_Synth (espeak_api.c:90)
==483407==    by 0x10ACA0: main (espeak-ng.c:691)
==483407==  Uninitialised value was created by a client request
==483407==    at 0x4884893: MakePhonemeList (phonemelist.c:155)
==483407==    by 0x4895712: TranslateClause (translate.c:2682)
==483407==    by 0x488FCCF: SpeakNextClause (synthesize.c:1569)
==483407==    by 0x4887F56: Synthesize (speech.c:457)
==483407==    by 0x488884C: sync_espeak_Synth (speech.c:570)
==483407==    by 0x487B270: espeak_Synth (espeak_api.c:90)
==483407==    by 0x10ACA0: main (espeak-ng.c:691)
==483407==

This is changing the ssml.test output, but with no audible difference,
so this is probably a real fix for it.

Now that all errors are fixed.

Otherwise we would miss errors produced on shutdown.

SSML logic has a bug (#410) where speech parameters are not changed when there's a
sentence elogic nd. The prosody bug test should fail.

A corpus of SSML input files will also be needed for fuzzing.
https://github.com/espeak-ng/espeak-ng/issues/407