fix infinitely growing bufferSize

source/RobotAPI/components/units/RobotUnit/util/ControlThreadOutputBuffer.cpp

@@ -338,7 +338,7 @@ namespace armarx
                                << " bytes for messages buffer, but the maximal buffer size is "
                                << getMaximalBufferSize();
             }
-            bufferSize = std::max(requiredSpace, getMaximalBufferSize());
+            bufferSize = std::min(requiredSpace, getMaximalBufferSize());
             buffer.resize(bufferSize, 0);
             requiredAdditionalBufferSpace = 0;
             messagesLost = 0;