Fixed bug in memory allocation that could affect 64 bit systems (affected hammer)

mysys/my_vsnprintf.c:
  safety fix
sql/log.cc:
  safety fix

mysys/my_vsnprintf.c

@@ -21,13 +21,18 @@
 #include <stdarg.h>
 #include <m_ctype.h>
 
+
 int my_snprintf(char* to, size_t n, const char* fmt, ...)
 {
+  int result;
   va_list args;
   va_start(args,fmt);
-  return my_vsnprintf(to, n, fmt, args);
+  result= my_vsnprintf(to, n, fmt, args);
+  va_end(args);
+  return result;
 }
 
+
 int my_vsnprintf(char *to, size_t n, const char* fmt, va_list ap)
 {
   char *start=to, *end=to+n-1;
@@ -79,6 +84,7 @@ int my_vsnprintf(char *to, size_t n, const char* fmt, va_list ap)
   return (uint) (to - start);
 }
 
+
 #ifdef MAIN
 static void my_printf(const char * fmt, ...)
 {
@@ -92,6 +98,7 @@ static void my_printf(const char * fmt, ...)
   va_end(ar);
 }
 
+
 int main()
 {
   

sql/ha_myisam.cc

@@ -953,7 +953,7 @@ int ha_myisam::create(const char *name, register TABLE *form,
 			&keydef, form->keys*sizeof(MI_KEYDEF),
 			&keyseg,
 			((form->key_parts + form->keys) * sizeof(MI_KEYSEG)),
-			0)))
+			NullS)))
     DBUG_RETURN(1);
 
   pos=form->key_info;

sql/log.cc

@@ -1067,6 +1067,7 @@ void sql_print_error(const char *format,...)
     char buff[1024];
     my_vsnprintf(buff,sizeof(buff)-1,format,args);
     DBUG_PRINT("error",("%s",buff));
+    va_end(args);
     va_start(args,format);
   }
 #endif