file not found SEGFAULT fix

git-svn-id: svn://svn.berlios.de/openocd/trunk@1030 b42882b7-edfa-0310-969c-e2dbd0fdcd60

src/helper/configuration.c

@@ -81,7 +81,7 @@ char *find_file(const char *file)
 		snprintf(full_path, 1024, "%s/%s", dir, file);
 		fp = fopen(full_path, mode);
 	}
-	
+
 	if (fp)
 	{
 		fclose(fp);
@@ -100,6 +100,8 @@ FILE *open_file_from_path (char *file, char *mode)
 	} else
 	{
 		char *full_path=find_file(file);
+		if (full_path==NULL)
+			return NULL;
 		FILE *fp = NULL;
 		fp = fopen(full_path, mode);
 		free(full_path);

src/target/target.c

@@ -1969,6 +1969,8 @@ int handle_mw_command(struct command_context_s *cmd_ctx, char *cmd, char **args,
 			default:
 			return ERROR_OK;
 		}
+		keep_alive();
+
 		if (retval!=ERROR_OK)
 		{
 			return retval;