Change FC end column to be one past the end

tests/BadAlt.newt.fail

@@ -7,4 +7,4 @@ ERROR at tests/BadAlt.newt:6:6--6:13: Prelude._:<_ not a constructor for (Prelud
   foo (xs :< x) = x
        ^^^^^^^
 
-ERROR at tests/BadAlt.newt:1:1--1:2: Compile failed
+ERROR at tests/BadAlt.newt:1:1--1:1: Compile failed

tests/Duplicate.newt.fail

@@ -6,4 +6,4 @@ ERROR at tests/Duplicate.newt:5:1--5:5: Duplicate.Left is already defined at tes
   data Either : U -> U -> U where
   ^^^^
 
-ERROR at tests/Duplicate.newt:1:1--1:2: Compile failed
+ERROR at tests/Duplicate.newt:1:1--1:1: Compile failed

tests/ErrMsg2.newt.fail

@@ -7,4 +7,4 @@ ERROR at tests/ErrMsg2.newt:6:13--6:15: Expected '=>' at Keyword:->
   foo x = \ x -> x
               ^^
 
-ERROR at tests/ErrMsg2.newt:1:1--1:2: Compile failed
+ERROR at tests/ErrMsg2.newt:1:1--1:1: Compile failed

tests/ErrorDup.newt.fail

@@ -18,4 +18,4 @@ ERROR at tests/ErrorDup.newt:5:6--5:9: Nat already declared
   data Nat = Z | S Nat
        ^^^
 
-ERROR at tests/ErrorDup.newt:1:1--1:2: Compile failed
+ERROR at tests/ErrorDup.newt:1:1--1:1: Compile failed

tests/LitConCase.newt.fail

@@ -6,4 +6,4 @@ ERROR at tests/LitConCase.newt:7:5--7:11: expected Prim.Int
   foo MkUnit = MkUnit
       ^^^^^^
 
-ERROR at tests/LitConCase.newt:1:1--1:2: Compile failed
+ERROR at tests/LitConCase.newt:1:1--1:1: Compile failed

tests/Possible.newt.fail

@@ -7,4 +7,4 @@ ERROR at tests/Possible.newt:6:5--6:8: possible constructors: [Prelude.Z, Prelud
   foo ()
       ^^^
 
-ERROR at tests/Possible.newt:1:1--1:2: Compile failed
+ERROR at tests/Possible.newt:1:1--1:1: Compile failed

tests/Quantity.newt.fail

@@ -7,4 +7,4 @@ ERROR at tests/Quantity.newt:11:15--11:16: used erased value x$0 (FIXME FC may b
   bar {x} = foo x
                 ^
 
-ERROR at tests/Quantity.newt:1:1--1:2: Compile failed
+ERROR at tests/Quantity.newt:1:1--1:1: Compile failed