warning cleanup: signed/unsigned in ternaries.

This is the third round of an effort to enable GCC's -Wextra
option. Instances of signed/unsigned mismatch between
the branches of ternary conditionals are addressed.

* ffi.c (pad_retval): Add cast into the consequent of
the conditional so it yields size_t, like the alternative.

* lib.c (split_str_keep): Likewise.
(vector): Cast -1 to ucnum so it has the same type as the
alloc_plus opposite to it.

* parser.c (lino_getch): Add a cast to wint_t to match
return value and opposite WEOF operand.

* stream.c (generic_get_line): Likewise.

* sysif.c (c_time): Convert both consequent and alternative
to time_t to silence warning.

1 files changed, 1 insertions, 1 deletions

diff --git a/ffi.c b/ffi.c
index 02b82372..ed04b3f1 100644
--- a/ffi.c
+++ b/ffi.c
@@ -66,7 +66,7 @@
 #define alignof(type) offsetof(struct {char x; type y;}, y)
 
 #define pad_retval(size) (!(size) || convert(size_t, size) > sizeof (ffi_arg) \
-                          ? (size) \
+                          ? (size_t) (size) \
                           : sizeof (ffi_arg))
 
 #define min(a, b) ((a) < (b) ? (a) : (b))