git-svn.perl: fix a false-positive in the "already exists" test

diff --git a/cache.h b/cache.h
index 3a8e1258e7a15e5ffba52ad400d9ae23cedb0982..422c5cfcb374259b46a7f92fc2a08b726f54f77a 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -1178,6 +1178,7 @@ extern const char *pager_program;
 extern int pager_in_use(void);
 extern int pager_use_color;
 extern int term_columns(void);
+extern int decimal_width(int);
 
 extern const char *editor_program;
 extern const char *askpass_program;