fixed a couple of minor bugs

back.c

@@ -102,13 +102,12 @@ int get_daemon_pid(void)
 		fprintf(stderr, "no spacenav pid file, can't find daemon\n");
 		return -1;
 	}
-	fgets(buf, sizeof buf, fp);
-	fclose(fp);
-
-	if(!isdigit(buf[0])) {
-		fprintf(stderr, "fucked up pidfile, can't find daemon\n");
+	if(!fgets(buf, sizeof buf, fp) || !isdigit(buf[0])) {
+		fprintf(stderr, "corrupted pidfile, can't find the daemon\n");
+		fclose(fp);
 		return -1;
 	}
+	fclose(fp);
 	return atoi(buf);
 }
 

cfgfile.c

@@ -250,7 +250,7 @@ int read_cfg(const char *fname, struct cfg *cfg)
 			}
 
 		} else if(strcmp(key_str, "serial") == 0) {
-			strncpy(cfg->serial_dev, val_str, PATH_MAX);
+			strncpy(cfg->serial_dev, val_str, PATH_MAX - 1);
 
 		} else {
 			fprintf(stderr, "unrecognized config option: %s\n", key_str);