PROFINET: Ensure multiple submodules are parsed

GSML parsing has a bug related to multiple submodules,
such that, the first submodule found in the GSDML needs
to be the PROFIsafe element, otherwise the description
is not parsed.


(cherry picked from commit d3ec582c26)

plugins/epan/profinet/packet-dcerpc-pn-io.c

@@ -9378,8 +9378,8 @@ dissect_ExpectedSubmoduleBlockReq_block(tvbuff_t *tvb, int offset,
                                                         }
                                                     }
                                                 }
+                                                break;    /* Found the PROFIsafe Module */
                                             }
-                                            break;    /* Found the PROFIsafe Module */
                                         }
                                     }
                                 }