Coverity Report: Fix issues for error type UNINIT in Core supported modules

(issue ASTERISK-19652)
Reported by: Matt Jordan
Review: https://reviewboard.asterisk.org/r/1909/
........

Merged revisions 366048 from http://svn.asterisk.org/svn/asterisk/branches/1.8
........

Merged revisions 366049 from http://svn.asterisk.org/svn/asterisk/branches/10


git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@366051 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_chanspy.c

@@ -1249,6 +1249,7 @@ static int extenspy_exec(struct ast_channel *chan, const char *data)
 		}
 
 	} else {
+		/* Coverity - This uninit_use should be ignored since this macro initializes the flags */
 		ast_clear_flag(&flags, AST_FLAGS_ALL);
 	}
 
@@ -1293,6 +1294,7 @@ static int dahdiscan_exec(struct ast_channel *chan, const char *data)
 	int res;
 	char *mygroup = NULL;
 
+	/* Coverity - This uninit_use should be ignored since this macro initializes the flags */
 	ast_clear_flag(&flags, AST_FLAGS_ALL);
 	ast_format_clear(&oldwf);
 	if (!ast_strlen_zero(data)) {

apps/app_disa.c

@@ -181,8 +181,13 @@ static int disa_exec(struct ast_channel *chan, const char *data)
 		args.context = "disa";
 	if (ast_strlen_zero(args.mailbox))
 		args.mailbox = "";
-	if (!ast_strlen_zero(args.options))
+	if (!ast_strlen_zero(args.options)) {
 		ast_app_parse_options(app_opts, &flags, NULL, args.options);
+	} else {
+		/* Coverity - This uninit_use should be ignored since this macro initializes the flags */
+		ast_clear_flag(&flags, AST_FLAGS_ALL);
+	}
+
 
 	ast_debug(1, "Mailbox: %s\n",args.mailbox);
 

funcs/func_cdr.c

@@ -197,7 +197,7 @@ AST_APP_OPTIONS(cdr_func_options, {
 static int cdr_read(struct ast_channel *chan, const char *cmd, char *parse,
 		    char *buf, size_t len)
 {
-	char *ret;
+	char *ret = NULL;
 	struct ast_flags flags = { 0 };
 	struct ast_cdr *cdr;
 	AST_DECLARE_APP_ARGS(args,

main/features.c

@@ -3606,9 +3606,11 @@ static int feature_interpret(struct ast_channel *chan, struct ast_channel *peer,
 	struct ast_flags features;
 	struct ast_call_feature feature;
 	if (sense == FEATURE_SENSE_CHAN) {
+		/* Coverity - This uninit_use should be ignored since this macro initializes the flags */
 		ast_copy_flags(&features, &(config->features_caller), AST_FLAGS_ALL);
 	}
 	else {
+		/* Coverity - This uninit_use should be ignored since this macro initializes the flags */
 		ast_copy_flags(&features, &(config->features_callee), AST_FLAGS_ALL);
 	}