bpo-32241: Add the const qualifire to declarations of umodifiable strings. (#4748)

diff --git a/Python/frozenmain.c b/Python/frozenmain.c
index 77602d7..a3b6196 100644
--- a/Python/frozenmain.c
+++ b/Python/frozenmain.c
@@ -23,7 +23,7 @@
         exit(1);
     }
 
-    char *p;
+    const char *p;
     int i, n, sts = 1;
     int inspect = 0;
     int unbuffered = 0;