BUG/MINOR: compression: Add OOM check for calloc() in parse_compression_options()

This patch adds a missing out-of-memory (OOM) check after
the call to `calloc()` in `parse_compression_options()`. If
memory allocation fails, an error message is set, the function
returns -1, and parsing is aborted to ensure safe handling
of low-memory conditions.

Co-authored-by: Christian Norbert Menges <christian.norbert.menges@sap.com>

Author: 2 people

src/flt_http_comp.c

@@ -830,6 +830,11 @@ parse_compression_options(char **args, int section, struct proxy *proxy,
 
 	if (proxy->comp == NULL) {
 		comp = calloc(1, sizeof(*comp));
+		if (unlikely(!comp)) {
+			memprintf(err, "'%s': out of memory.", args[0]);
+			ret = -1;
+			goto end;
+		}
 		/* Always default to compress responses */
 		comp->flags = COMP_FL_DIR_RES;
 		proxy->comp = comp;