Merge pull request #160 from TileDB-Inc/call-free-on-all-char-allocs

Call free on all char allocs

array.go

@@ -717,6 +717,7 @@ func (a *Array) NonEmptyDomainFromName(dimName string) (*NonEmptyDomain, bool, e
 func (a *Array) URI() (string, error) {
 	var curi *C.char
 	defer C.free(unsafe.Pointer(curi))
+
 	C.tiledb_array_get_uri(a.context.tiledbContext, a.tiledbArray, &curi)
 	uri := C.GoString(curi)
 	if uri == "" {
@@ -1001,6 +1002,7 @@ func (a *Array) GetMetadataFromIndex(index uint64) (*ArrayMetadata, error) {
 func (a *Array) GetMetadataFromIndexWithValueLimit(index uint64, limit *uint) (*ArrayMetadata, error) {
 	var cKey *C.char
 	defer C.free(unsafe.Pointer(cKey))
+
 	var cIndex C.uint64_t = C.uint64_t(index)
 	var cType C.tiledb_datatype_t
 	var cKeyLen C.uint32_t

config_iter.go

@@ -56,6 +56,9 @@ func (ci *ConfigIter) Free() {
 func (ci *ConfigIter) Here() (*string, *string, error) {
 	var err *C.tiledb_error_t
 	var cparam, cvalue *C.char
+	defer C.free(unsafe.Pointer(cparam))
+	defer C.free(unsafe.Pointer(cvalue))
+
 	C.tiledb_config_iter_here(ci.tiledbConfigIter, &cparam, &cvalue, &err)
 	if err != nil {
 		var msg *C.char

context.go

@@ -83,7 +83,6 @@ func (c *Context) Config() (*Config, error) {
 func (c *Context) LastError() error {
 	var err *C.tiledb_error_t
 	ret := C.tiledb_ctx_get_last_error(c.tiledbContext, &err)
-
 	if ret == C.TILEDB_OOM {
 		return fmt.Errorf("Out of Memory error in tiledb_ctx_get_last_error")
 	} else if ret != C.TILEDB_OK {
@@ -92,9 +91,9 @@ func (c *Context) LastError() error {
 
 	if err != nil {
 		var msg *C.char
+		defer C.free(unsafe.Pointer(msg))
 		defer C.tiledb_error_free(&err)
 		ret := C.tiledb_error_message(err, &msg)
-
 		if ret == C.TILEDB_OOM {
 			return fmt.Errorf("Out of Memory error in tiledb_error_message")
 		} else if ret != C.TILEDB_OK {

query.go

@@ -3205,6 +3205,7 @@ func (q *Query) GetFragmentNum() (*uint32, error) {
 // GetFragmentURI returns uri for a fragment
 func (q *Query) GetFragmentURI(num uint64) (*string, error) {
 	var cURI *C.char
+	defer C.free(unsafe.Pointer(cURI))
 
 	ret := C.tiledb_query_get_fragment_uri(
 		q.context.tiledbContext,