Remove leading spaces when KConfig is decoded

The previous version expected that the "source" and "config" keys were
at the beginning of the line but it is not mandatory in the Kconfig
file.

userspace/libwr/dot-config.c

@@ -226,7 +226,13 @@ static int libwr_cfg_read_kconfig(struct kc **all_configs,
 	if (!f)
 		return -1;
 	while (fgets(s, sizeof(s), f)) {
-		if (sscanf(s, "source %s", name) == 1) {
+		char *ss=s;
+
+		/* Remove leading spaces */
+		while ( *ss==' ' || *ss=='\t')
+			ss++;
+
+		if (sscanf(ss, "source %s", name) == 1) {
 			/* Recursive call for sourced files */
 			ret = libwr_cfg_read_kconfig(all_configs,
 						     kconfig_dirname, name,
@@ -234,7 +240,7 @@ static int libwr_cfg_read_kconfig(struct kc **all_configs,
 			if (ret)
 				break;
 		}
-		if (sscanf(s, "config %s", name) != 1)
+		if (sscanf(ss, "config %s", name) != 1)
 			continue;
 		kc = malloc(sizeof(*kc));
 		if (!kc) {