terminal: fix warning about uninitialized variable

In fact the struct member `value` was not initialized for Invalid_entry.

repos/gems/run/terminal_decoder.run

@@ -8,6 +8,7 @@ install_config {
 		<service name="ROM"/>
 		<service name="RAM"/>
 		<service name="LOG"/>
+		<service name="RM"/>
 	</parent-provides>
 	<default-route>
 		<any-service> <any-child/> <parent/> </any-service>

repos/gems/run/terminal_log.run

@@ -9,6 +9,7 @@ build {
 	init
 	drivers/framebuffer
 	drivers/input
+	drivers/timer
 	drivers/pci
 	server/nitpicker
 	server/nit_fb

repos/os/include/terminal/decoder.h

@@ -71,8 +71,8 @@ namespace Terminal {
 					{
 						enum { INVALID, NUMBER, CODE };
 
-						int type;
-						int value;
+						int type  = INVALID;
+						int value = 0;
 					};
 
 					struct Number_entry : Entry
@@ -85,10 +85,7 @@ namespace Terminal {
 						Code_entry(int code) { type = CODE, value = code; }
 					};
 
-					struct Invalid_entry : Entry
-					{
-						Invalid_entry() { type = INVALID; }
-					};
+					struct Invalid_entry : Entry { };
 
 				private: