patch 8.1.1393: unnecessary type casts

Problem:    Unnecessary type casts.
Solution:   Remove type casts from alloc() and lalloc() calls. (Mike Williams)
diff --git a/src/evalfunc.c b/src/evalfunc.c
index 914efb1..3256b22 100644
--- a/src/evalfunc.c
+++ b/src/evalfunc.c
@@ -4412,7 +4412,7 @@
 	     * would also work, but some plugins depend on the name being
 	     * printable text. */
 	    sprintf(sid_buf, "<SNR>%ld_", (long)current_sctx.sc_sid);
-	    name = alloc((int)(STRLEN(sid_buf) + STRLEN(s + off) + 1));
+	    name = alloc(STRLEN(sid_buf) + STRLEN(s + off) + 1);
 	    if (name != NULL)
 	    {
 		STRCPY(name, sid_buf);
@@ -12671,7 +12671,7 @@
 	}
 
 	/* Make an array with each entry pointing to an item in the List. */
-	ptrs = (sortItem_T *)alloc((int)(len * sizeof(sortItem_T)));
+	ptrs = (sortItem_T *)alloc(len * sizeof(sortItem_T));
 	if (ptrs == NULL)
 	    goto theend;