Fix clang static analyzer warnings about unused instance variables in WebIconDatabase, WKView.
Documentation says that __attribute__((unused)) should be used for this purpose:
Note that __attribute__((unused)) is already defined as UNUSED_FUNCTION in Compiler.h, but it's used for a different purpose: to denote unused parameters in a function definition in these source files:
Created attachment 396283 [details]
Committed r260027: <https://trac.webkit.org/changeset/260027>
All reviewed patches have been landed. Closing bug and clearing flags on attachment 396283 [details].