ftp: convert state names to a global array

... just to make them easier to print in debug ouputs while debugging.
They are still within #ifdef [debugbuild].

lib/ftp.c

@@ -775,6 +775,47 @@ CURLcode Curl_GetFTPResponse(ssize_t *nreadp, /* return number of bytes read */
   return result;
 }
 
+#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
+  /* for debug purposes */
+static const char * const ftp_state_names[]={
+  "STOP",
+  "WAIT220",
+  "AUTH",
+  "USER",
+  "PASS",
+  "ACCT",
+  "PBSZ",
+  "PROT",
+  "CCC",
+  "PWD",
+  "SYST",
+  "NAMEFMT",
+  "QUOTE",
+  "RETR_PREQUOTE",
+  "STOR_PREQUOTE",
+  "POSTQUOTE",
+  "CWD",
+  "MKD",
+  "MDTM",
+  "TYPE",
+  "LIST_TYPE",
+  "RETR_TYPE",
+  "STOR_TYPE",
+  "SIZE",
+  "RETR_SIZE",
+  "STOR_SIZE",
+  "REST",
+  "RETR_REST",
+  "PORT",
+  "PRET",
+  "PASV",
+  "LIST",
+  "RETR",
+  "STOR",
+  "QUIT"
+};
+#endif
+
 /* This is the ONLY way to change FTP state! */
 static void _state(struct connectdata *conn,
                    ftpstate newstate
@@ -783,51 +824,12 @@ static void _state(struct connectdata *conn,
 #endif
   )
 {
-#if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
-  /* for debug purposes */
-  static const char * const names[]={
-    "STOP",
-    "WAIT220",
-    "AUTH",
-    "USER",
-    "PASS",
-    "ACCT",
-    "PBSZ",
-    "PROT",
-    "CCC",
-    "PWD",
-    "SYST",
-    "NAMEFMT",
-    "QUOTE",
-    "RETR_PREQUOTE",
-    "STOR_PREQUOTE",
-    "POSTQUOTE",
-    "CWD",
-    "MKD",
-    "MDTM",
-    "TYPE",
-    "LIST_TYPE",
-    "RETR_TYPE",
-    "STOR_TYPE",
-    "SIZE",
-    "RETR_SIZE",
-    "STOR_SIZE",
-    "REST",
-    "RETR_REST",
-    "PORT",
-    "PRET",
-    "PASV",
-    "LIST",
-    "RETR",
-    "STOR",
-    "QUIT"
-  };
-#endif
   struct ftp_conn *ftpc = &conn->proto.ftpc;
 #if defined(DEBUGBUILD) && !defined(CURL_DISABLE_VERBOSE_STRINGS)
   if(ftpc->state != newstate)
     infof(conn->data, "FTP %p (line %d) state change from %s to %s\n",
-          (void *)ftpc, lineno, names[ftpc->state], names[newstate]);
+          (void *)ftpc, lineno, ftp_state_names[ftpc->state],
+          ftp_state_names[newstate]);
 #endif
   ftpc->state = newstate;
 }