pldm package parser: fix caller

While porting [1] in [2] i had missed to also adapt the caller for the
PackageParser to the new API.

Adapting the caller to pass the full package as done in [1].

Tested: Unit Tests [3] for common code are passing again

```
ninja: Entering directory `build'
[17/18] Running all tests
 1/11 test_device_specific_update_function                     OK              0.06s
 2/11 test_device_start_update_async_immediate_success         OK              0.05s
 3/11 test_device_start_update_async_onreset_success           OK              0.05s
 4/11 test_software                                            OK              0.04s
 5/11 test_software_association                                OK              0.03s
 6/11 test_software_version                                    OK              0.02s
 7/11 test_software_get_random_softwareid                      OK              0.02s
 8/11 test_software_config                                     OK              0.02s
 9/11 test_device_start_update_async_invalid_fd                OK              0.04s
10/11 test_software_update                                     OK              2.02s
11/11 utest                                                    OK              6.12s

Ok:                11
Fail:              0
```

References:
[1] https://gerrit.openbmc.org/c/openbmc/pldm/+/81162
[2] https://gerrit.openbmc.org/c/openbmc/phosphor-bmc-code-mgmt/+/81195
[3] https://gerrit.openbmc.org/c/openbmc/phosphor-bmc-code-mgmt/+/77236

Change-Id: Ic080483510ed921ca64695a7599fbbd3f27185cb
Signed-off-by: Alexander Hansen <alexander.hansen@9elements.com>
diff --git a/common/pldm/pldm_package_util.cpp b/common/pldm/pldm_package_util.cpp
index 2d348a0..0db676c 100644
--- a/common/pldm/pldm_package_util.cpp
+++ b/common/pldm/pldm_package_util.cpp
@@ -50,12 +50,7 @@
     debug("parsing package, pkg header size: {N}", "N",
           packageParser->pkgHeaderSize);
 
-    std::vector<uint8_t> pkgHeaderOnly;
-    pkgHeaderOnly.insert(
-        pkgHeaderOnly.end(), pkgData.begin(),
-        pkgData.begin() + (long)(packageParser->pkgHeaderSize));
-
-    packageParser->parse(pkgHeaderOnly, pkgData.size());
+    packageParser->parse(pkgData, pkgData.size());
 
     return packageParser;
 }