strbuf_setlen(): do not barf on setting length of an empty buffer to 0

diff --git a/cache.h b/cache.h
index 8650d62334323898f5173dcfa5af463c18e40624..916ee5155bc0cb8f35c81f1c2809bb30162ebb83 100644 (file)
--- a/cache.h
+++ b/cache.h
@@ -585,8 +585,6 @@ extern void *alloc_object_node(void);
 extern void alloc_report(void);
 
 /* trace.c */
-extern int nfasprintf(char **str, const char *fmt, ...);
-extern int nfvasprintf(char **str, const char *fmt, va_list va);
 extern void trace_printf(const char *format, ...);
 extern void trace_argv_printf(const char **argv, int count, const char *format, ...);