parser: make input() return char
parser: make input() return char

Now that read errors are dealt with immediately, input() will never
return anything but a character.  Change its return type to char,
and change the type of the variable in yylex() that holds its return
value to char as well.

Signed-off-by: Alex Elder <f429030cf5c0faf36fac3d102073b6e63a647baa@linaro.org>
Message-Id: <20211001232338.769309-9-f429030cf5c0faf36fac3d102073b6e63a647baa@linaro.org>
Signed-off-by: Bjorn Andersson <6e6fda072d932515099508d6d220572c68e9add5@linaro.org>

andersson/qmic