Add missing includes of base/exception.h

This header used to be included implicitly by base/blocking.h, which
does no longer exist.

Issue #4768

repos/base/include/base/id_space.h

@@ -18,6 +18,7 @@
 #include <util/meta.h>
 #include <base/mutex.h>
 #include <base/log.h>
+#include <base/exception.h>
 #include <util/avl_tree.h>
 
 namespace Genode { template <typename T> class Id_space; }

repos/base/include/base/quota_guard.h

@@ -16,6 +16,7 @@
 
 #include <util/string.h>
 #include <base/log.h>
+#include <base/exception.h>
 
 namespace Genode {
 

repos/base/include/base/signal.h

@@ -21,6 +21,7 @@
 #include <util/list.h>
 #include <base/semaphore.h>
 #include <base/capability.h>
+#include <base/exception.h>
 
 /* only needed for base-hw */
 namespace Kernel { struct Signal_receiver; }

repos/base/include/base/weak_ptr.h

@@ -17,6 +17,7 @@
 #include <base/blockade.h>
 #include <base/mutex.h>
 #include <base/log.h>
+#include <base/exception.h>
 #include <util/list.h>
 
 namespace Genode {

repos/base/include/util/list_model.h

@@ -23,6 +23,7 @@
 #include <util/xml_node.h>
 #include <util/list.h>
 #include <base/log.h>
+#include <base/exception.h>
 
 namespace Genode {
 

repos/ports/src/virtualbox6/sup_vm.h

@@ -15,6 +15,9 @@
 #ifndef _SUP_VM_H_
 #define _SUP_VM_H_
 
+/* Genode includes */
+#include <base/exception.h>
+
 /* VirtualBox includes */
 #include <iprt/assert.h>
 #include <VBox/vmm/gvm.h>