Merge pull request #240 from fgsch/fail-on-unsupported-opt

Error out if -p is used on unsupported platforms
diff --git a/cmdline.c b/cmdline.c
index 05f3adc..f069e2c 100644
--- a/cmdline.c
+++ b/cmdline.c
@@ -651,6 +651,9 @@
                     LOG_E("-p '%d' is invalid", hfuzz->netbsd.pid);
                     return false;
                 }
+#else
+                LOG_E("-p not supported on this platform");
+                return false;
 #endif
                 break;
             case 0x502: