hw: Fix qemu_allocate_irqs() leaks

Replace qemu_allocate_irqs(foo, bar, 1)[0]
with qemu_allocate_irq(foo, bar, 0).

This avoids leaking the dereferenced qemu_irq *.

Cc: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Andreas Färber <afaerber@suse.de>
[PC Changes:
 * Applied change to instance in sh4/sh7750.c
]
Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Kirill Batuzov <batuzovk@ispras.ru>
[AF: Fix IRQ index in sh4/sh7750.c]
Cc: qemu-stable@nongnu.org
Signed-off-by: Andreas Färber <afaerber@suse.de>
diff --git a/hw/timer/omap_gptimer.c b/hw/timer/omap_gptimer.c
index 016207f..b7f3d49 100644
--- a/hw/timer/omap_gptimer.c
+++ b/hw/timer/omap_gptimer.c
@@ -227,7 +227,7 @@
 static void omap_gp_timer_clk_setup(struct omap_gp_timer_s *timer)
 {
     omap_clk_adduser(timer->clk,
-                    qemu_allocate_irqs(omap_gp_timer_clk_update, timer, 1)[0]);
+                     qemu_allocate_irq(omap_gp_timer_clk_update, timer, 0));
     timer->rate = omap_clk_getrate(timer->clk);
 }
 
@@ -476,7 +476,7 @@
     s->clk = fclk;
     s->timer = timer_new_ns(QEMU_CLOCK_VIRTUAL, omap_gp_timer_tick, s);
     s->match = timer_new_ns(QEMU_CLOCK_VIRTUAL, omap_gp_timer_match, s);
-    s->in = qemu_allocate_irqs(omap_gp_timer_input, s, 1)[0];
+    s->in = qemu_allocate_irq(omap_gp_timer_input, s, 0);
     omap_gp_timer_reset(s);
     omap_gp_timer_clk_setup(s);