Fix memory leak in function handle_content_type

The function handle_content_type allocates memory for boundary
using xmalloc(sizeof(struct strbuf)). If (++mi->content_top >=
&mi->content[MAX_BOUNDARIES]) is true, the function returns
without freeing boundary.

Signed-off-by: Jinyao Guo <[email protected]>
Signed-off-by: Junio C Hamano <[email protected]>

Author: jinyaoguo

mailinfo.c

@@ -266,6 +266,9 @@ static void handle_content_type(struct mailinfo *mi, struct strbuf *line)
 			error("Too many boundaries to handle");
 			mi->input_error = -1;
 			mi->content_top = &mi->content[MAX_BOUNDARIES] - 1;
+			strbuf_release(boundary);
+			free(boundary);
+			boundary = NULL;
 			return;
 		}
 		*(mi->content_top) = boundary;