patch 8.2.2557: compiler warning for shadowd variable

Problem:    Compiler warning for shadowd variable.
Solution:   Declare "p" only once.

Author: brammool

src/version.c

@@ -750,6 +750,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    2557,
 /**/
     2556,
 /**/

src/vim9script.c

@@ -364,8 +364,6 @@ handle_import(
 	arg = skipwhite_and_linebreak(arg, evalarg);
 	if (STRNCMP("as", arg, 2) == 0 && IS_WHITE_OR_NUL(arg[2]))
 	{
-	    char_u *p;
-
 	    // skip over "as Name "; no line break allowed after "as"
 	    arg = skipwhite(arg + 2);
 	    p = arg;