refactor: fix bad closure capture in System constructor

Author: AayushSabharwal

lib/ModelingToolkitBase/src/systems/system.jl

@@ -480,14 +480,17 @@ function System(eqs::Vector{Equation}, iv, dvs, ps, brownians = SymbolicT[];
     filter!(!(Base.Fix1(===, COMMON_NOTHING) ∘ last), guesses)
 
     if iv === nothing
-        filter!(bindings) do kvp
-            k = kvp[1]
-            if k in all_dvs
-                initial_conditions[k] = kvp[2]
-                return false
+        filterer = let initial_conditions = initial_conditions, all_dvs = all_dvs
+            function _filterer(kvp)
+                k = kvp[1]
+                if k in all_dvs
+                    initial_conditions[k] = kvp[2]
+                    return false
+                end
+                return true
             end
-            return true
         end
+        filter!(filterer, bindings)
     end
 
     check_bindings(ps, bindings)