code review 5314060: gc: fix [568]g -V crash

src/cmd/gc/lex.c

 // Copyright 2009 The Go Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
 #include        <u.h>
 #include        <libc.h>
 #include        "go.h"
 #include        "y.tab.h"
 #include        <ar.h>
 
@@ skipping 211 matching lines @@
                 break;
 ········
         case 'u':
                 safemode = 1;
                 break;
 
         case 'V':
                 p = expstring();
                 if(strcmp(p, "X:none") == 0)
                         p = "";
-                print("%cg version %s%s%s%s\n", thechar, getgoversion(), *p ? " " : "", p);
+                print("%cg version %s%s%s\n", thechar, getgoversion(), *p ? " " : "", p);
                 exits(0);
         } ARGEND
 
         if(argc < 1)
                 usage();
 
         // special flag to detect compilation of package runtime
         compiling_runtime = debug['+'];
 
         pathname = mal(1000);
@@ skipping 1826 matching lines @@
                         p = infile;
                 else
                         p = p+1;
                 snprint(namebuf, sizeof(namebuf), "%s", p);
                 p = strrchr(namebuf, '.');
                 if(p != nil)
                         *p = 0;
                 outfile = smprint("%s.%c", namebuf, thechar);
         }
 }