conditionalise stdint.h inclusion on HAVE_STDINT_H

fixes build on AIX5 at least

auth-options.c

@@ -24,7 +24,9 @@
 #include <pwd.h>
 #include <string.h>
 #include <stdio.h>
+#ifdef HAVE_STDINT_H
 # include <stdint.h>
+#endif
 #include <stdarg.h>
 #include <ctype.h>
 #include <limits.h>

misc.c

@@ -38,7 +38,9 @@
 #include <signal.h>
 #include <stdarg.h>
 #include <stdio.h>
+#ifdef HAVE_STDINT_H
 # include <stdint.h>
+#endif
 #include <stdlib.h>
 #include <string.h>
 #include <time.h>

regress/misc/fuzz-harness/agent_fuzz.cc

@@ -1,7 +1,9 @@
 // cc_fuzz_target test for ssh-agent.
 extern "C" {
 
+#ifdef HAVE_STDINT_H
 # include <stdint.h>
+#endif
 #include <sys/types.h>
 
 extern void test_one(const uint8_t* s, size_t slen);

sk-usbhid.c

@@ -20,7 +20,9 @@
 
 #ifdef ENABLE_SK_INTERNAL
 
+#ifdef HAVE_STDINT_H
 # include <stdint.h>
+#endif
 #include <stdlib.h>
 #include <string.h>
 #include <stdio.h>

ssh-xmss.c

@@ -25,7 +25,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <stdarg.h>
+#ifdef HAVE_STDINT_H
 # include <stdint.h>
+#endif
 #include <unistd.h>
 
 #include "log.h"