Yikes! sftp.c wasn't using the misc.h wrappered malloc functions,

meaning that PSFTP couldn't meaningfully be debugged using
Minefield. That's what I get for developing it under Unix and
forgetting to port it properly :-/

[originally from svn r1383]

sftp.c

@@ -7,13 +7,10 @@
 #include <string.h>
 #include <assert.h>
 
+#include "misc.h"
 #include "int64.h"
 #include "sftp.h"
 
-#define smalloc malloc
-#define srealloc realloc
-#define sfree free
-
 #define GET_32BIT(cp) \
     (((unsigned long)(unsigned char)(cp)[0] << 24) | \
     ((unsigned long)(unsigned char)(cp)[1] << 16) | \