libyang BUGFIX avoid uninitialized vars

Author: michalvasko

src/ly_common.c

@@ -316,7 +316,7 @@ static LY_ERR
 ly_ctx_shared_data_create(const struct ly_ctx *ctx, struct ly_ctx_shared_data **shared_data)
 {
     LY_ERR rc = LY_SUCCESS;
-    struct ly_ctx_shared_data *shrd_data;
+    struct ly_ctx_shared_data *shrd_data = NULL;
 
     if (shared_data) {
         *shared_data = NULL;

src/parser_lyb.c

@@ -1571,7 +1571,7 @@ lyd_parse_lyb(const struct ly_ctx *ctx, const struct lysc_ext_instance *ext, str
 
     if (!(ctx->opts & LY_CTX_LYB_HASHES)) {
         /* generate LYB hashes */
-        LY_CHECK_GOTO(rc = ly_ctx_set_options((struct ly_ctx *)ctx, LY_CTX_LYB_HASHES), cleanup);
+        LY_CHECK_RET(ly_ctx_set_options((struct ly_ctx *)ctx, LY_CTX_LYB_HASHES));
     }
 
     if (subtree_sibling) {

src/tree_schema.c

@@ -1545,7 +1545,7 @@ lys_parse_submodule(struct ly_ctx *ctx, struct ly_in *in, LYS_INFORMAT format, s
     struct lysp_submodule *submod = NULL, *latest_sp;
     struct lysp_yang_ctx *yangctx = NULL;
     struct lysp_yin_ctx *yinctx = NULL;
-    struct lysp_ctx *pctx;
+    struct lysp_ctx *pctx = NULL;
 
     LY_CHECK_ARG_RET(ctx, ctx, in, LY_EINVAL);
 

src/validation.c

@@ -2151,7 +2151,7 @@ LIBYANG_API_DEF LY_ERR
 lyd_validate_ext(struct lyd_node **ext_tree, const struct lysc_ext_instance *ext, uint32_t val_opts,
         const struct lyd_node *dep_tree, struct lyd_node **diff)
 {
-    LY_ERR rc;
+    LY_ERR rc = LY_SUCCESS;
     struct lyd_node *next, *iter;
     struct ly_set dep_set = {0};