Rename a test that shared its name with another test

testsuite/tests/indexed-types/should_fail/T2334.stderr → testsuite/tests/indexed-types/should_fail/T2334A.stderr

 
-T2334.hs:9:26:
+T2334A.hs:9:26:
     The constructor of a newtype must have exactly one field
       but `F' has two
     In the definition of data constructor `F'
     In the newtype instance declaration for `F'
 
-T2334.hs:10:27:
+T2334A.hs:10:27:
     The constructor of a newtype must have exactly one field
       but `H' has none
     In the definition of data constructor `H'
     In the newtype instance declaration for `F'
 
-T2334.hs:12:15:
+T2334A.hs:12:15:
     Conflicting family instance declarations:
-      F Bool -- Defined at T2334.hs:12:15
-      F Bool -- Defined at T2334.hs:13:15
+      F Bool -- Defined at T2334A.hs:12:15
+      F Bool -- Defined at T2334A.hs:13:15

testsuite/tests/indexed-types/should_fail/all.T

@@ -41,7 +41,7 @@ test('Over',
 
 test('SkolemOccursLoop', expect_fail, compile_fail, [''])
 
-test('T2334', normal, compile_fail, [''])
+test('T2334A', normal, compile_fail, [''])
 test('T1900', normal, compile_fail, [''])
 test('T2157', normal, compile_fail, [''])
 test('T2203a', normal, compile_fail, [''])