SdkTool: Return 0 on success

Change-Id: I8499e3ca267cc0035a181d47a1f573999ac3fc33
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/tools/sdktool/main.cpp

@@ -144,7 +144,7 @@ int parseArguments(const QStringList &args, Settings *s, const QList<Operation *
         return -1;
     }
 
-    return 1;
+    return 0;
 }
 
 int main(int argc, char *argv[])