patch 8.2.3956: duplicate assignment

Problem:    Duplicate assignment.
Solution:   Remove the second assignment. (closes #9442)

src/evalfunc.c

@@ -4847,7 +4847,6 @@ f_getregtype(typval_T *argvars, typval_T *rettv)
 		sprintf((char *)buf + 1, "%ld", reglen + 1);
 		break;
     }
-    rettv->v_type = VAR_STRING;
     rettv->vval.v_string = vim_strsave(buf);
 }
 

src/version.c

@@ -749,6 +749,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    3956,
 /**/
     3955,
 /**/