pldm: prefer empty() over size() == 0

Prefer container.empty() over container.size() == 0 for
clarity and consistency with the rest of the codebase.
empty() directly expresses intent and follows common
C++ container usage conventions.

Change-Id: Ia1beac941428d420b2c02a68cd66ea1732f9f989
Signed-off-by: Meghana Vangapandu <meghanav@ami.com>

libpldmresponder/event_parser.cpp

diff --git a/libpldmresponder/event_parser.cpp b/libpldmresponder/event_parser.cpp
index 5158eda..7a57d15 100644
--- a/libpldmresponder/event_parser.cpp
+++ b/libpldmresponder/event_parser.cpp
@@ -84,7 +84,7 @@
 
             auto eventStates = entry.value("event_states", emptyJsonList);
             auto propertyValues = dbus.value("property_values", emptyJsonList);
-            if ((eventStates.size() == 0) || (propertyValues.size() == 0) ||
+            if (eventStates.empty() || propertyValues.empty() ||
                 (eventStates.size() != propertyValues.size()))
             {
                 error(

libpldmresponder/platform_numeric_effecter.hpp

diff --git a/libpldmresponder/platform_numeric_effecter.hpp b/libpldmresponder/platform_numeric_effecter.hpp
index 3116542..52bfaac 100644
--- a/libpldmresponder/platform_numeric_effecter.hpp
+++ b/libpldmresponder/platform_numeric_effecter.hpp
@@ -537,7 +537,7 @@
     {
         const auto& [dbusMappings, dbusValMaps] =
             handler.getDbusObjMaps(effecterId);
-        if (dbusMappings.size() > 0)
+        if (!dbusMappings.empty())
         {
             dbusMapping = {
                 dbusMappings[0].objectPath, dbusMappings[0].interface,

pldmtool/pldm_base_cmd.cpp

diff --git a/pldmtool/pldm_base_cmd.cpp b/pldmtool/pldm_base_cmd.cpp
index 1073f4c..4199184 100644
--- a/pldmtool/pldm_base_cmd.cpp
+++ b/pldmtool/pldm_base_cmd.cpp
@@ -418,7 +418,7 @@
             sizeof(pldm_msg_hdr) + PLDM_GET_COMMANDS_REQ_BYTES);
         auto request = new (requestMsg.data()) pldm_msg;
         ver32_t version{0xFF, 0xFF, 0xFF, 0xFF};
-        if (inputVersion.size() != 0)
+        if (!inputVersion.empty())
         {
             if (inputVersion.size() != 4)
             {

softoff/softoff.cpp

diff --git a/softoff/softoff.cpp b/softoff/softoff.cpp
index f741211..4ad6a66 100644
--- a/softoff/softoff.cpp
+++ b/softoff/softoff.cpp
@@ -231,7 +231,7 @@
 
         ResponseMsg.read(Response);
 
-        if (Response.size() == 0)
+        if (Response.empty())
         {
             error(
                 "No State Sensor PDR found for TID={TID}, EntityType={ENTITY_TYPE}, StateSetId={STATE_SET}",