scope variables in floating point cast tests
scope variables in floating point cast tests

Fixes a bug where the result of a @floatCast wasn't actually checked; it
was checking the result from the previous @floatCast.

zig-lang/zig,Dimenus/zig,Dimenus/zig,raulgrell/zig,andrewrk/zig,andrewrk/zig,zig-lang/zig,raulgrell/zig,raulgrell/zig,raulgrell/zig,Dimenus/zig,zig-lang/zig,raulgrell/zig