Guard against the case where the size is zero

diff --git a/NSGetExecutablePath.xs b/NSGetExecutablePath.xs
index 93ba9a301e11539cf01a67680bd70ac91e95881f..b9ef190a3a26ab41e5dfb5d17e335e2922561ae3 100644 (file)
--- a/NSGetExecutablePath.xs
+++ b/NSGetExecutablePath.xs
@@ -34,7 +34,8 @@ PPCODE:
  buffer = SvGROW(dst, size);
  if (_NSGetExecutablePath(buffer, &size))
   croak(nsgep_too_long);
- SvCUR_set(dst, size - 1);
+ if (size)
+  SvCUR_set(dst, size - 1);
  SvPOK_on(dst);
  XPUSHs(dst);
  XSRETURN(1);