RstParser: make struct-matching happen before variable and pointer matching
RstParser: make struct-matching happen before variable and pointer matching

Since we match substrings of struct declarations, it's safer to try to
match structs first to ensure we don't accidentally match the struct
string via the variable or pointer matchers.

amaiorano/vectrexy,amaiorano/vectrexy,amaiorano/vectrexy