fix also possible null dereferenced pointers 

Signed-off-by: Olivier Hardouin <olivier.hardo...@gmail.com>
---
 uci.c  | 6 ++++++
 ucix.c | 9 ++++++++-
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/uci.c b/uci.c
index f5aad02..46c3922 100644
--- a/uci.c
+++ b/uci.c
@@ -54,6 +54,9 @@ char* uci_get_option(struct uci_context *ctx, char *section, 
char *option)
        char *value = NULL;
        struct uci_ptr ptr;
 
+       if (!p)
+               return NULL;
+
        memset(&ptr, 0, sizeof(ptr));
        ptr.package = p->e.name;
        ptr.section = section;
@@ -101,6 +104,9 @@ void uci_for_each_section_type(char *type, void 
(*cb)(char*, void*), void *priv)
 {
        struct uci_element *e;
 
+       if (!p)
+               return;
+
        uci_foreach_element(&p->sections, e)
                if (!strcmp(type, uci_to_section(e)->type))
                        cb(e->name, priv);
diff --git a/ucix.c b/ucix.c
index e2a6780..1e4d1e6 100644
--- a/ucix.c
+++ b/ucix.c
@@ -18,6 +18,8 @@ static inline int ucix_get_ptr(struct uci_context *ctx, const 
char *p, const cha
 struct uci_context* ucix_init(const char *config_file)
 {
        struct uci_context *ctx = uci_alloc_context();
+       if(!ctx)
+               return NULL;
        uci_add_delta_path(ctx, "/var/state");
        if(uci_load(ctx, config_file, NULL) != UCI_OK)
        {
@@ -30,6 +32,8 @@ struct uci_context* ucix_init(const char *config_file)
 struct uci_context* ucix_init_path(const char *path, const char *config_file)
 {
        struct uci_context *ctx = uci_alloc_context();
+       if(!ctx)
+               return NULL;
        if(path)
        {
                uci_set_savedir(ctx, path);
@@ -44,7 +48,10 @@ struct uci_context* ucix_init_path(const char *path, const 
char *config_file)
 
 void ucix_cleanup(struct uci_context *ctx)
 {
-       uci_free_context(ctx);
+       if(ctx)
+       {
+               uci_free_context(ctx);
+       }
 }
 
 int ucix_save(struct uci_context *ctx, const char *p)
-- 
1.9.1
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