[PATCH v1 2/2] curl_off_t xcurl_off_t is not portable

[tboegi]

From: Torsten Bögershausen <tbo...@web.de>

Comparing signed and unsigned values is not always portable.
When  setting
DEVELOPER = 1
DEVOPTS = extra-all

"gcc (Raspbian 6.3.0-18+rpi1+deb9u1) 6.3.0 20170516" errors out with
"comparison is always false due to limited range of data type"
"[-Werror=type-limits]"

Solution:
Use a valid cast & compare, similar to xsize_t()

Signed-off-by: Torsten Bögershausen <tbo...@web.de>
---
 remote-curl.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/remote-curl.c b/remote-curl.c
index 762a55a75f..c89fd6d1c3 100644
--- a/remote-curl.c
+++ b/remote-curl.c
@@ -618,9 +618,10 @@ static int probe_rpc(struct rpc_state *rpc, struct 
slot_results *results)
 }
 
 static curl_off_t xcurl_off_t(ssize_t len) {
-       if (len > maximum_signed_value_of_type(curl_off_t))
+       curl_off_t size = (curl_off_t) len;
+       if (len != (ssize_t) size)
                die("cannot handle pushes this big");
-       return (curl_off_t) len;
+       return size;
 }
 
 static int post_rpc(struct rpc_state *rpc)
-- 
2.11.0