fix up some coverity issues

thin-provisioning/metadata_dumper.cc

@@ -40,6 +40,7 @@ namespace {
 			  md_sm_(md_sm),
 			  data_sm_(data_sm),
 			  in_range_(false),
+			  time_(),
 			  found_errors_(false) {
 		}
 

thin-provisioning/restore_emitter.cc

@@ -32,6 +32,7 @@ namespace {
 		restorer(metadata::ptr md)
 			: md_(md),
 			  in_superblock_(false),
+			  nr_data_blocks_(),
 			  empty_mapping_(new_mapping_tree()) {
 		}
 

thin-provisioning/superblock.cc

@@ -37,6 +37,7 @@ superblock_traits::unpack(superblock_disk const &disk, superblock &value)
 	value.metadata_nr_blocks_ = to_cpu<uint64_t>(disk.metadata_nr_blocks_);
 
 	value.compat_flags_ = to_cpu<uint32_t>(disk.compat_flags_);
+	value.compat_ro_flags_ = to_cpu<uint32_t>(disk.compat_ro_flags_);
 	value.incompat_flags_ = to_cpu<uint32_t>(disk.incompat_flags_);
 }
 
@@ -70,6 +71,7 @@ superblock_traits::pack(superblock const &value, superblock_disk &disk)
 	disk.metadata_nr_blocks_ = to_disk<le64>(value.metadata_nr_blocks_);
 
 	disk.compat_flags_ = to_disk<le32>(value.compat_flags_);
+	disk.compat_ro_flags_ = to_disk<le32>(value.compat_ro_flags_);
 	disk.incompat_flags_ = to_disk<le32>(value.incompat_flags_);
 }
 

thin-provisioning/thin_check.cc

@@ -216,7 +216,8 @@ namespace {
 	class mapping_reporter : public mapping_tree_detail::damage_visitor {
 	public:
 		mapping_reporter(nested_output &out)
-		: out_(out) {
+		: out_(out),
+		  err_(NO_ERROR) {
 		}
 
 		virtual void visit(mapping_tree_detail::missing_devices const &d) {

thin-provisioning/thin_rmap.cc

@@ -150,7 +150,14 @@ int main(int argc, char **argv)
 
 		case 1:
 			// region
-			regions.push_back(parse_region(optarg));
+			try {
+				regions.push_back(parse_region(optarg));
+
+			} catch (std::exception const &e) {
+				cerr << e.what();
+				return 1;
+			}
+
 			break;
 
 		default: