seabios: acpi: fix memory leak in build_srat().

numadata() is allocated for temporal use, but not freed.
free it.

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
diff --git a/src/acpi.c b/src/acpi.c
index 244536a..651f3a2 100644
--- a/src/acpi.c
+++ b/src/acpi.c
@@ -528,6 +528,7 @@
     srat = malloc_high(srat_size);
     if (!srat) {
         dprintf(1, "Not enough memory for srat table!\n");
+        free(numadata);
         return NULL;
     }
 
@@ -594,6 +595,7 @@
 
     build_header((void*)srat, SRAT_SIGNATURE, srat_size, 1);
 
+    free(numadata);
     return srat;
 }