Merge pull request #6702 from bandi13/ZD16572

Check the return value

Author: JacobBarthelmeh

wolfcrypt/src/asn.c

@@ -31698,9 +31698,16 @@ int StoreECC_DSA_Sig(byte* out, word32* outLen, mp_int* r, mp_int* s)
     }
     if (ret == 0) {
         /* Encode DSA signature into buffer. */
-        SetASN_Items(dsaSigASN, dataASN, dsaSigASN_Length, out);
-        /* Set the actual encoding size. */
-        *outLen = (word32)sz;
+        ret = SetASN_Items(dsaSigASN, dataASN, dsaSigASN_Length, out);
+        if (ret >= 0) {
+            if (ret == sz) {
+                /* Set the actual encoding size. */
+                *outLen = (word32)sz;
+                ret = 0;
+            } else {
+                ret = BAD_STATE_E;
+            }
+        }
     }
 
     return ret;