zlib: fix compilation failures with Sun C Compilaer

diff --git a/run-command.c b/run-command.c
index 24eaad5c66c1742602347c42c71d279297aabc2a..04712191e8acfbf000c526a5b1b0a80541e8e174 100644 (file)
--- a/run-command.c
+++ b/run-command.c
@@ -249,7 +249,7 @@ static int wait_or_whine(pid_t pid, const char *argv0)
                 * mimics the exit code that a POSIX shell would report for
                 * a program that died from this signal.
                 */
-               code -= 128;
+               code += 128;
        } else if (WIFEXITED(status)) {
                code = WEXITSTATUS(status);
                /*