Build: Do not add redundant -Wall flag

The -Wall flag is already set by default, as mesons warning_level defaults to 1, which includes the -Wall flag.

added 2 commits

• 0b7be94f - 1 commit from branch videolan:master
• 7a4003f2 - Build: Do not add redundant -Wall flag

Compare with previous version

Fixes #12 (closed)

LGTM

added 13 commits

• 7a4003f2...5c6c3acc - 12 commits from branch videolan:master
• 133fe1f9 - Build: Do not add redundant -Wall flag

Compare with previous version

merged