don't double define our own string functions on platforms that don't have them (issue #5169)

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@6587 65c4cc65-6c06-0410-ace0-fbb531ad65f3

astmm.c

@@ -13,7 +13,6 @@
 
 #ifdef __AST_DEBUG_MALLOC
 
-#include <malloc.h>
 #include <stdio.h>
 #include <string.h>
 #include <time.h>

include/asterisk/strings.h

@@ -214,7 +214,7 @@ struct ast_realloca {
 char *strcasestr(const char *, const char *);
 #endif
 
-#ifndef HAVE_STRNDUP
+#if !defined(HAVE_STRNDUP) && !defined(__AST_DEBUG_MALLOC)
 char *strndup(const char *, size_t);
 #endif
 
@@ -222,7 +222,7 @@ char *strndup(const char *, size_t);
 size_t strnlen(const char *, size_t);
 #endif
 
-#ifndef HAVE_VASPRINTF
+#if !defined(HAVE_VASPRINTF) && !defined(__AST_DEBUG_MALLOC)
 int vasprintf(char **strp, const char *fmt, va_list ap);
 #endif
 

utils.c

@@ -658,7 +658,7 @@ size_t strnlen(const char *s, size_t n)
 }
 #endif
 
-#ifndef HAVE_STRNDUP
+#if !defined(HAVE_STRNDUP) && !defined(__AST_DEBUG_MALLOC)
 char *strndup(const char *s, size_t n)
 {
 	size_t len = strnlen(s, n);
@@ -672,7 +672,7 @@ char *strndup(const char *s, size_t n)
 }
 #endif
 
-#ifndef HAVE_VASPRINTF
+#if !defined(HAVE_VASPRINTF) && !defined(__AST_DEBUG_MALLOC)
 int vasprintf(char **strp, const char *fmt, va_list ap)
 {
 	int size;