Fix accidental skip of w in T U V.. naming

Author: steffahn

library/core/src/iter/traits/collect.rs

@@ -704,13 +704,13 @@ spec_tuple_impl!(
     ((T, t, ExtendT, 0), @, @),
     ((U, u, ExtendU, 1), SpecTupleExtend2, default_extend_tuple_2),
     ((V, v, ExtendV, 2), SpecTupleExtend3, default_extend_tuple_3),
-    ((X, x, ExtendX, 3), SpecTupleExtend4, default_extend_tuple_4),
-    ((Y, y, ExtendY, 4), SpecTupleExtend5, default_extend_tuple_5),
-    ((Z, z, ExtendZ, 5), SpecTupleExtend6, default_extend_tuple_6),
-    ((A, a, ExtendA, 6), SpecTupleExtend7, default_extend_tuple_7),
-    ((B, b, ExtendB, 7), SpecTupleExtend8, default_extend_tuple_8),
-    ((C, c, ExtendC, 8), SpecTupleExtend9, default_extend_tuple_9),
-    ((D, d, ExtendD, 9), SpecTupleExtend10, default_extend_tuple_10),
-    ((E, e, ExtendE, 10), SpecTupleExtend11, default_extend_tuple_11),
-    ((F, f, ExtendF, 11), SpecTupleExtend12, default_extend_tuple_12),
+    ((W, w, ExtendW, 3), SpecTupleExtend4, default_extend_tuple_4),
+    ((X, x, ExtendX, 4), SpecTupleExtend5, default_extend_tuple_5),
+    ((Y, y, ExtendY, 5), SpecTupleExtend6, default_extend_tuple_6),
+    ((Z, z, ExtendZ, 6), SpecTupleExtend7, default_extend_tuple_7),
+    ((A, a, ExtendA, 7), SpecTupleExtend8, default_extend_tuple_8),
+    ((B, b, ExtendB, 8), SpecTupleExtend9, default_extend_tuple_9),
+    ((C, c, ExtendC, 9), SpecTupleExtend10, default_extend_tuple_10),
+    ((D, d, ExtendD, 10), SpecTupleExtend11, default_extend_tuple_11),
+    ((E, e, ExtendE, 11), SpecTupleExtend12, default_extend_tuple_12),
 );