lib REFACTOR uninit var false positives

Author: michalvasko

src/plugins_types/union.c

@@ -223,7 +223,7 @@ union_store_type(const struct ly_ctx *ctx, struct lysc_type_union *type_u, uint3
     ly_bool dynamic = 0;
     LY_VALUE_FORMAT format;
     void *prefix_data;
-    uint32_t value_size_bits, opts = 0, ti;
+    uint32_t value_size_bits = 0, opts = 0, ti;
     struct lyplg_type *type_plg;
 
     *err = NULL;

src/xpath.c

@@ -459,7 +459,7 @@ static LY_ERR
 cast_string_recursive(const struct lyd_node *node, struct lyxp_set *set, uint32_t indent, char **str, uint32_t *used,
         uint32_t *size)
 {
-    char *buf, *line, *ptr = NULL;
+    char *buf = NULL, *line, *ptr = NULL;
     const char *value_str;
     uint16_t nodetype;
     const struct lyd_node *child;