Fix StackFrame.AddFrames patch fails if other mod patches it

[DiFFoZ]

Fixes this exception if other mods (like BepInEx_MonoMod_Debug_Patcher) patches the StackFrame.AddFrames.

KeyNotFoundException: The given key was not present in the dictionary.
  at MonoMod.Cil.ILCursor.GotoNext (MonoMod.Cil.MoveType moveType, System.Func`2[Mono.Cecil.Cil.Instruction,System.Boolean][] predicates) [0x0000a] in <6733e342b5b549bba815373898724469>:0 
  at MonoMod.Cil.ILCursor.GotoNext (System.Func`2[Mono.Cecil.Cil.Instruction,System.Boolean][] predicates) [0x00000] in <6733e342b5b549bba815373898724469>:0 
  at LethalLib.Plugin.IlHook (MonoMod.Cil.ILContext il) [0x00007] in <c68aa40cbbae4bd69cd2fcd50c8f1ae1>:0 
  at MonoMod.Cil.ILContext.Invoke (MonoMod.Cil.ILContext+Manipulator manip) [0x00087] in <6733e342b5b549bba815373898724469>:0 
  at MonoMod.RuntimeDetour.ILHook+Context.InvokeManipulator (Mono.Cecil.MethodDefinition def, MonoMod.Cil.ILContext+Manipulator cb) [0x00012] in <4e2760c7517c4ea79c633d67e84b319f>:0 
  at (wrapper dynamic-method) MonoMod.RuntimeDetour.ILHook+Context.DMD<MonoMod.RuntimeDetour.ILHook+Context::Refresh>(MonoMod.RuntimeDetour.ILHook/Context)
  at (wrapper dynamic-method) MonoMod.Utils.DynamicMethodDefinition.Trampoline<MonoMod.RuntimeDetour.ILHook+Context::Refresh>?373559048(object)
  at HarmonyLib.Internal.RuntimeFixes.StackTraceFixes.OnILChainRefresh (System.Object self) [0x00000] in <474744d65d8e460fa08cd5fd82b5d65f>:0 
  at MonoMod.RuntimeDetour.ILHook.Apply () [0x00059] in <4e2760c7517c4ea79c633d67e84b319f>:0 
  at MonoMod.RuntimeDetour.ILHook..ctor (System.Reflection.MethodBase from, MonoMod.Cil.ILContext+Manipulator manipulator, MonoMod.RuntimeDetour.ILHookConfig& config) [0x00148] in <4e2760c7517c4ea79c633d67e84b319f>:0 
  at MonoMod.RuntimeDetour.ILHook..ctor (System.Reflection.MethodBase from, MonoMod.Cil.ILContext+Manipulator manipulator, MonoMod.RuntimeDetour.ILHookConfig config) [0x00000] in <4e2760c7517c4ea79c633d67e84b319f>:0 
  at MonoMod.RuntimeDetour.ILHook..ctor (System.Reflection.MethodBase from, MonoMod.Cil.ILContext+Manipulator manipulator) [0x0001c] in <4e2760c7517c4ea79c633d67e84b319f>:0 
  at LethalLib.Plugin.Awake () [0x00086] in <c68aa40cbbae4bd69cd2fcd50c8f1ae1>:0 

[Hamunii]

lgtm