From: Jan Engelhardt <jengelh@inai.de>
Upstream: https://sourceforge.net/p/gsoap2/bugs/1253/

Revert broken code change in 2.8.89 that ignores all -z options.

diff --git a/gsoap/src/soapcpp2.c b/gsoap/src/soapcpp2.c
index 34ca6fce..3a92e297 100644
--- a/gsoap/src/soapcpp2.c
+++ b/gsoap/src/soapcpp2.c
@@ -356,22 +356,15 @@ infile  header file to parse (if none reads stdin)\n\
             vflag = 1;
             break;
           case 'z':
-          {
-            int z = zflag;
             a++;
-            if (zflag)
-              fprintf(stderr, "soapcpp2: Option -z specified twice\n");
             g = 0;
             if (*a)
               zflag = *a - '0';
             else if (i < argc && argv[++i])
               zflag = *argv[i] - '0';
             else
-              execerror("Option -z requires an argument");
-            if (zflag == 0 || z < zflag)
-              zflag = z;
+              execerror("Option -z requires a digit");
             break;
-          }
           default:
             fprintf(stderr, "soapcpp2: Unknown option %s\n", a);
             exit(1);