Fix misaligned access inside taskstats structure

Reported by UB sanitizer (alongside several other messages):
linux/LinuxProcessList.c:782:25: runtime error: member access within misaligned address 0x614000000264 for type 'struct taskstats', which requires 8 byte alignment
0x614000000264: note: pointer points here
  64 01 03 00 0a 00 00 00  00 00 00 00 02 00 00 00  00 00 00 00 4b c8 2e 00  00 00 00 00 3e 45 3c fd
              ^

The issue doesn't cause trouble on x86, but any architecture with stricter memory alignment requirements may inadvertedly break.

linux/LinuxProcessList.c

@@ -766,7 +766,7 @@ static int handleNetlinkMsg(struct nl_msg *nlmsg, void *linuxProcess) {
    struct nlmsghdr *nlhdr;
    struct nlattr *nlattrs[TASKSTATS_TYPE_MAX + 1];
    struct nlattr *nlattr;
-   struct taskstats *stats;
+   struct taskstats stats;
    int rem;
    unsigned long long int timeDelta;
    LinuxProcess* lp = (LinuxProcess*) linuxProcess;
@@ -778,20 +778,21 @@ static int handleNetlinkMsg(struct nl_msg *nlmsg, void *linuxProcess) {
    }
 
    if ((nlattr = nlattrs[TASKSTATS_TYPE_AGGR_PID]) || (nlattr = nlattrs[TASKSTATS_TYPE_NULL])) {
-      stats = nla_data(nla_next(nla_data(nlattr), &rem));
-      assert(lp->super.pid == (pid_t)stats->ac_pid);
-      timeDelta = (stats->ac_etime*1000 - lp->delay_read_time);
+      memcpy(&stats, nla_data(nla_next(nla_data(nlattr), &rem)), sizeof(stats));
+      assert(lp->super.pid == (pid_t)stats.ac_pid);
+
+      timeDelta = (stats.ac_etime*1000 - lp->delay_read_time);
       #define BOUNDS(x) isnan(x) ? 0.0 : (x > 100) ? 100.0 : x;
       #define DELTAPERC(x,y) BOUNDS((float) (x - y) / timeDelta * 100);
-      lp->cpu_delay_percent = DELTAPERC(stats->cpu_delay_total, lp->cpu_delay_total);
-      lp->blkio_delay_percent = DELTAPERC(stats->blkio_delay_total, lp->blkio_delay_total);
-      lp->swapin_delay_percent = DELTAPERC(stats->swapin_delay_total, lp->swapin_delay_total);
+      lp->cpu_delay_percent = DELTAPERC(stats.cpu_delay_total, lp->cpu_delay_total);
+      lp->blkio_delay_percent = DELTAPERC(stats.blkio_delay_total, lp->blkio_delay_total);
+      lp->swapin_delay_percent = DELTAPERC(stats.swapin_delay_total, lp->swapin_delay_total);
       #undef DELTAPERC
       #undef BOUNDS
-      lp->swapin_delay_total = stats->swapin_delay_total;
-      lp->blkio_delay_total = stats->blkio_delay_total;
-      lp->cpu_delay_total = stats->cpu_delay_total;
-      lp->delay_read_time = stats->ac_etime*1000;
+      lp->swapin_delay_total = stats.swapin_delay_total;
+      lp->blkio_delay_total = stats.blkio_delay_total;
+      lp->cpu_delay_total = stats.cpu_delay_total;
+      lp->delay_read_time = stats.ac_etime*1000;
    }
    return NL_OK;
 }