[hackers] [dwmstatus] Close fd if there was an empty return. || Christoph Lohmann

[git]

commit 81cdc8f4a2528374842049c214937349b30fbebc
Author:     Christoph Lohmann <2...@r-36.net>
AuthorDate: Sun Jan 29 12:15:22 2023 +0100
Commit:     Christoph Lohmann <2...@r-36.net>
CommitDate: Sun Jan 29 12:15:22 2023 +0100

    Close fd if there was an empty return.
    
    * Not closing will use up all file descriptors over time.

diff --git a/dwmstatus.c b/dwmstatus.c
index a8cd4ac..1b53292 100644
--- a/dwmstatus.c
+++ b/dwmstatus.c
@@ -106,8 +106,10 @@ readfile(char *base, char *file)
        if (fd == NULL)
                return NULL;
 
-       if (fgets(line, sizeof(line)-1, fd) == NULL)
+       if (fgets(line, sizeof(line)-1, fd) == NULL) {
+               fclose(fd);
                return NULL;
+       }
        fclose(fd);
 
        return smprintf("%s", line);