../lib/core/ogs-list.h:62:24: warning: invalid conversion from 'void*' to 'ogs_list_t*' {aka 'ogs_list_s*'} [-fpermissive]
../lib/core/ogs-rbtree.h:79:32: warning: invalid conversion from 'const void*' to 'const ogs_rbnode_t*' {aka 'const ogs_rbnode_s*'} [-fpermissive]
[SBI] Fix compiler error - possible uninitialized variable
[SCP] Fix compiler error - Error: this condition has identical branches
In case of additional compiler warnings turned on, the compiler warns
about potentially unused variables. Fix those issues.