Fix some excessive spacing in error messages

Test Plan: If it builds, ship it

Reviewers: austin, bgamari

Subscribers: rwbarton, thomie

Differential Revision: https://phabricator.haskell.org/D3729

compiler/typecheck/TcClassDcl.hs

@@ -521,5 +521,5 @@ warnMissingAT name
        -- Warn only if -Wmissing-methods AND not a signature
        ; warnTc (Reason Opt_WarnMissingMethods) (warn && hsc_src /= HsigFile)
                 (text "No explicit" <+> text "associated type"
-                    <+> text "or default declaration for     "
+                    <+> text "or default declaration for"
                     <+> quotes (ppr name)) }

testsuite/tests/deriving/should_fail/drvfail011.stderr

 
-drvfail011.hs:8:1:
-    No instance for (Eq a) arising from a use of ‘==’
-    Possible fix: add (Eq a) to the context of the instance declaration
-    In the expression: ((a1 == b1))
-    In an equation for ‘==’: (==) (T1 a1) (T1 b1) = ((a1 == b1))
-    When typechecking the code for  ‘==’
-      in a derived instance for ‘Eq (T a)’:
-      To see the code I am typechecking, use -ddump-deriv
-    In the instance declaration for ‘Eq (T a)’
+drvfail011.hs:8:1: error:
+    • No instance for (Eq a) arising from a use of ‘==’
+      Possible fix: add (Eq a) to the context of the instance declaration
+    • In the expression: ((a1 == b1))
+      In an equation for ‘==’: (==) (T1 a1) (T1 b1) = ((a1 == b1))
+      When typechecking the code for ‘==’
+        in a derived instance for ‘Eq (T a)’:
+        To see the code I am typechecking, use -ddump-deriv
+      In the instance declaration for ‘Eq (T a)’

testsuite/tests/indexed-types/should_compile/Simple2.stderr

 
 Simple2.hs:21:1: warning: [-Wmissing-methods (in -Wdefault)]
-    • No explicit associated type or default declaration for      ‘S3n’
+    • No explicit associated type or default declaration for ‘S3n’
     • In the instance declaration for ‘C3 Char’
 
 Simple2.hs:21:10: warning: [-Wmissing-methods (in -Wdefault)]
@@ -9,7 +9,7 @@ Simple2.hs:21:10: warning: [-Wmissing-methods (in -Wdefault)]
     • In the instance declaration for ‘C3 Char’
 
 Simple2.hs:29:1: warning: [-Wmissing-methods (in -Wdefault)]
-    • No explicit associated type or default declaration for      ‘S3n’
+    • No explicit associated type or default declaration for ‘S3n’
     • In the instance declaration for ‘C3 Bool’
 
 Simple2.hs:29:10: warning: [-Wmissing-methods (in -Wdefault)]
@@ -18,11 +18,11 @@ Simple2.hs:29:10: warning: [-Wmissing-methods (in -Wdefault)]
     • In the instance declaration for ‘C3 Bool’
 
 Simple2.hs:39:1: warning: [-Wmissing-methods (in -Wdefault)]
-    • No explicit associated type or default declaration for      ‘S3’
+    • No explicit associated type or default declaration for ‘S3’
     • In the instance declaration for ‘C3 Float’
 
 Simple2.hs:39:1: warning: [-Wmissing-methods (in -Wdefault)]
-    • No explicit associated type or default declaration for      ‘S3n’
+    • No explicit associated type or default declaration for ‘S3n’
     • In the instance declaration for ‘C3 Float’
 
 Simple2.hs:39:10: warning: [-Wmissing-methods (in -Wdefault)]

testsuite/tests/typecheck/should_compile/tc254.stderr

 
 tc254.hs:8:1: warning: [-Wmissing-methods (in -Wdefault)]
-    • No explicit associated type or default declaration for      ‘Typ’
+    • No explicit associated type or default declaration for ‘Typ’
     • In the instance declaration for ‘Cls Int’