fix bug in t-function for >: (#35136)

(cherry picked from commit 2a5bb59)

Author: JeffBezanson

base/compiler/abstractinterpretation.jl

@@ -841,7 +841,7 @@ function abstract_call_known(@nospecialize(f), fargs::Union{Nothing,Vector{Any}}
     elseif la == 3 && istopfunction(f, :(>:))
         # mark issupertype as a exact alias for issubtype
         # swap T1 and T2 arguments and call <:
-        if length(fargs) == 3
+        if fargs !== nothing && length(fargs) == 3
             fargs = Any[<:, fargs[3], fargs[2]]
         else
             fargs = nothing

test/compiler/inference.jl

@@ -2503,3 +2503,5 @@ function h34752()
     a34752(g...)
 end
 @test h34752() === true
+
+@test map(>:, [Int], [Int]) == [true]