doc: fix a coding style error in the developer documentation.
doc: fix link to the ISC license text in the developer documentation.
lavu: fix typo in documentation.
Merge commit '6c0e83511705e7f8f5100e7852a1e7fd16aa8877'

* commit '6c0e83511705e7f8f5100e7852a1e7fd16aa8877':
  doc: fix a coding style error in the developer documentation.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge commit '57ead8449e44bd07b3d4a5bd42f1aab64566f92e'

* commit '57ead8449e44bd07b3d4a5bd42f1aab64566f92e':
  doc: fix link to the ISC license text in the developer documentation.

Merged-by: Michael Niedermayer <michaelni@gmx.at>
Merge remote-tracking branch 'qatar/master'

* qatar/master:
  lavu: fix typo in documentation.

See: e53061154f42cda93052a2f558e1c4697e3b0c1a
Merged-by: Michael Niedermayer <michaelni@gmx.at>
wtvenc: test avio_size() validity

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>