Now initializes field hash struct in eip712 context

src_features/signMessageEIP712/context.c

@@ -5,6 +5,7 @@
 #include "mem.h"
 #include "sol_typenames.h"
 #include "path.h"
+#include "field_hash.h"
 
 uint8_t  *typenames_array;
 uint8_t  *structs_array;
@@ -29,6 +30,11 @@ bool    init_eip712_context(void)
         return false;
     }
 
+    if (field_hash_init() == false)
+    {
+        return false;
+    }
+
     // set types pointer
     if ((structs_array = mem_alloc(sizeof(uint8_t))) == NULL)
     {

src_features/signMessageEIP712/field_hash.c

@@ -9,7 +9,7 @@
 
 static s_field_hashing *fh = NULL;
 
-static bool field_hash_init(void)
+bool field_hash_init(void)
 {
     if (fh == NULL)
     {
@@ -35,7 +35,7 @@ const uint8_t *field_hash(const uint8_t *data,
     uint8_t *hash_ptr = NULL;
 
     (void)data;
-    if ((fh == NULL) && (field_hash_init() == false))
+    if (fh == NULL)
     {
         return NULL;
     }

src_features/signMessageEIP712/field_hash.h

@@ -18,6 +18,7 @@ typedef struct
     uint8_t     state; // e_field_hashing_state
 }   s_field_hashing;
 
+bool field_hash_init(void);
 const uint8_t *field_hash(const uint8_t *data,
                           uint8_t data_length,
                           bool partial);