sysutils/gdisk: fix memory corruption while using sgdisk command

while parsing arguments, the device (last argument) variable is reset
before being used.

sysutils/gdisk/Makefile

@@ -1,6 +1,6 @@
 PORTNAME=	gdisk
 PORTVERSION=	1.0.9
-PORTREVISION=	1
+PORTREVISION=	2
 CATEGORIES=	sysutils
 MASTER_SITES=	SF/gptfdisk/gptfdisk/${PORTVERSION}
 DISTNAME=	gptfdisk-${PORTVERSION}

sysutils/gdisk/files/patch-gptcl.cc

@@ -0,0 +1,33 @@
+--- gptcl.cc.orig	2022-11-22 09:31:13 UTC
++++ gptcl.cc
+@@ -71,7 +71,7 @@ int GPTDataCL::DoOptions(int argc, char* argv[]) {
+    uint64_t low, high, startSector, endSector, sSize, mainTableLBA;
+    uint64_t temp; // temporary variable; free to use in any case
+    char *device;
+-   string cmd, typeGUID, name;
++   string cmd, typeGUID, name, devstr;
+    PartType typeHelper;
+ 
+    struct poptOption theOptions[] =
+@@ -156,9 +156,11 @@ int GPTDataCL::DoOptions(int argc, char* argv[]) {
+ 
+    // Assume first non-option argument is the device filename....
+    device = (char*) poptGetArg(poptCon);
++   if (device != NULL)
++        devstr = device;
+    poptResetContext(poptCon);
+ 
+-   if (device != NULL) {
++   if (devstr.empty()) {
+       JustLooking(); // reset as necessary
+       BeQuiet(); // Tell called functions to be less verbose & interactive
+       if (LoadPartitions(devstr)) {
+@@ -498,7 +500,7 @@ int GPTDataCL::DoOptions(int argc, char* argv[]) {
+          cerr << "Error encountered; not saving changes.\n";
+          retval = 4;
+       } // if
+-   } // if (device != NULL)
++   } // if (devstr empty)
+    poptFreeContext(poptCon);
+    return retval;
+ } // GPTDataCL::DoOptions()