Silence miscellaneous 64-to-32-bit data loss warnings.

src/prof.c

@@ -989,7 +989,7 @@ prof_dump_close(bool propagate_err)
 static bool
 prof_dump_write(bool propagate_err, const char *s)
 {
-	unsigned i, slen, n;
+	size_t i, slen, n;
 
 	cassert(config_prof);
 

src/util.c

@@ -53,8 +53,12 @@ wrtmessage(void *cbopaque, const char *s)
 	 * Use syscall(2) rather than write(2) when possible in order to avoid
 	 * the possibility of memory allocation within libc.  This is necessary
 	 * on FreeBSD; most operating systems do not have this problem though.
+	 *
+	 * syscall() returns long or int, depending on platform, so capture the
+	 * unused result in the widest plausible type to avoid compiler
+	 * warnings.
 	 */
-	UNUSED int result = syscall(SYS_write, STDERR_FILENO, s, strlen(s));
+	UNUSED long result = syscall(SYS_write, STDERR_FILENO, s, strlen(s));
 #else
 	UNUSED int result = write(STDERR_FILENO, s, strlen(s));
 #endif