Actually remove dead processes from lshal

Test: run lshal with and without the change

Change-Id: Id8c52a5be3253f5ff9c1cb851459a16e01ca5dda
Fixes: 35765788
diff --git a/cmds/lshal/ListCommand.cpp b/cmds/lshal/ListCommand.cpp
index fe2a7ca..710b6e4 100644
--- a/cmds/lshal/ListCommand.cpp
+++ b/cmds/lshal/ListCommand.cpp
@@ -68,9 +68,9 @@
 
 void ListCommand::removeDeadProcesses(Pids *pids) {
     static const pid_t myPid = getpid();
-    std::remove_if(pids->begin(), pids->end(), [this](auto pid) {
+    pids->erase(std::remove_if(pids->begin(), pids->end(), [this](auto pid) {
         return pid == myPid || this->getCmdline(pid).empty();
-    });
+    }), pids->end());
 }
 
 bool ListCommand::getReferencedPids(