Merge pull request #30 from TuringLang/mt/minor_fix

Minor fix

Author: mohamed82008

src/varinfo.jl

@@ -1107,7 +1107,7 @@ function push!(
             )
 
     if vi isa UntypedVarInfo
-        @assert ~(vn in keys(vi)) "[push!] attempt to add an exisitng variable $(sym(vn)) ($(vn)) to VarInfo (keys=$(keys(vi))) with dist=$dist, gid=$gid"
+        @assert ~(vn in keys(vi)) "[push!] attempt to add an exisitng variable $(getsym(vn)) ($(vn)) to VarInfo (keys=$(keys(vi))) with dist=$dist, gid=$gidset"
     elseif vi isa TypedVarInfo
         @assert ~(haskey(vi, vn)) "[push!] attempt to add an exisitng variable $(getsym(vn)) ($(vn)) to TypedVarInfo of syms $(syms(vi)) with dist=$dist, gid=$gidset"
     end