tests: comment changes

* tests/actions.at, tests/input.at: here.

tests/actions.at

@@ -1277,7 +1277,7 @@ AT_BISON_OPTION_PUSHDEFS([%skeleton "$1"])
 
 AT_DATA_GRAMMAR([[input.y]],
 [[%skeleton "$1"
-%defines   // FIXME: Mandated by lalr1.cc in Bison 2.6.
+%defines   // FIXME: Mandated by glr.cc.
 %debug
 %code requires
 {

tests/input.at

@@ -376,7 +376,7 @@ AT_TEST([[%type <type> exp
 exp: a;]],
 [[input.y:3.13-14: warning: useless %printer for type <> [-Wother]]])
 
-# If nobody is is typed, <*> is useless.
+# If nobody is typed, <*> is useless.
 AT_TEST([[%token a
 %printer {} <> <*>
 %%