More doxygen warning fixes

[lnjX]

No description provided.

[codecov]

Codecov Report

Merging #343 (37cbebf) into master (fdbe1ae) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##           master     #343   +/-   ##
=======================================
  Coverage   75.93%   75.94%           
=======================================
  Files         210      210           
  Lines       17460    17461    +1     
=======================================
+ Hits        13259    13260    +1     
  Misses       4201     4201           

Impacted Files	Coverage Δ
src/base/QXmppIbbIq.cpp	100.00% <ø> (ø)
src/base/QXmppIbbIq.h	100.00% <ø> (ø)
src/base/QXmppMamIq.cpp	24.09% <ø> (ø)
src/base/QXmppMamIq.h	50.00% <ø> (ø)
src/base/QXmppMixIq.h	100.00% <ø> (ø)
src/base/QXmppMixItem.cpp	94.84% <ø> (ø)
src/base/QXmppMixItem.h	100.00% <ø> (ø)
src/base/QXmppNonSASLAuth.cpp	79.48% <ø> (ø)
src/base/QXmppNonSASLAuth.h	0.00% <ø> (ø)
src/base/QXmppStreamFeatures.h	100.00% <ø> (ø)
... and 2 more

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