buffer: rely on `GITERR_OOM` set by `git_buf_try_grow`
The function `git_buf_try_grow` consistently calls `giterr_set_oom`
whenever growing the buffer fails due to insufficient memory being
available. So in fact, we do not have to do this ourselves when a call
to any buffer-growing function has failed due to an OOM situation. But
we still do so in two functions, which this patch cleans up.
diff --git a/src/pack.c b/src/pack.c
index 60b757e..d24c138 100644
--- a/src/pack.c
+++ b/src/pack.c
@@ -324,7 +324,6 @@
git_buf_put(&idx_name, p->pack_name, name_len - strlen(".pack"));
git_buf_puts(&idx_name, ".idx");
if (git_buf_oom(&idx_name)) {
- giterr_set_oom();
return -1;
}
diff --git a/src/transports/winhttp.c b/src/transports/winhttp.c
index e8e8480..fb504c9 100644
--- a/src/transports/winhttp.c
+++ b/src/transports/winhttp.c
@@ -429,7 +429,6 @@
git_buf_printf(&processed_url, ":%s", t->proxy_connection_data.port);
if (git_buf_oom(&processed_url)) {
- giterr_set_oom();
error = -1;
goto on_error;
}
