[libgda] GdaJValue: Fix build now that GdaTimeStamp is an opaque type.

[Murray Cumming <murrayc src gnome org>]

commit da591b19dd9ddaae0750747979c4a459f5dadb4f
Author: Murray Cumming <murrayc murrayc com>
Date:   Sun Oct 29 21:59:56 2017 +0100

    GdaJValue: Fix build now that GdaTimeStamp is an opaque type.

 providers/jdbc/GdaJValue.c |   14 ++++----------
 1 files changed, 4 insertions(+), 10 deletions(-)
---
diff --git a/providers/jdbc/GdaJValue.c b/providers/jdbc/GdaJValue.c
index c4e9b31..e6583f8 100644
--- a/providers/jdbc/GdaJValue.c
+++ b/providers/jdbc/GdaJValue.c
@@ -265,13 +265,7 @@ JNICALL Java_GdaJValue_setCTimestamp (G_GNUC_UNUSED JNIEnv *jenv, G_GNUC_UNUSED
        GdaTimestamp *ts;
        GValue *value;
 
-       ts = g_new0 (GdaTimestamp, 1);
-       ts->year = year;
-       ts->month = month;
-       ts->day = day;
-       ts->hour = hour;
-       ts->minute = min;
-       ts->second = sec;
+       ts = gda_timestamp_new_from_values (year, month, day, hour, min, sec, 0, 0);
 
        value = gda_row_get_value (GDA_ROW (jni_jlong_to_cpointer (c_pointer)), col);
        gda_value_reset_with_type (value, GDA_TYPE_TIMESTAMP);
@@ -296,9 +290,9 @@ JNICALL Java_GdaJValue_getCTimestamp (JNIEnv *jenv, jobject obj, jlong c_pointer
                return NULL;
        }
 
-       jobj = (*jenv)->CallObjectMethod (jenv, obj, GdaJValue__createTimestamp->mid, 
-                                         ts->year, ts->month, ts->day,
-                                         ts->hour, ts->minute, ts->second);
+       jobj = (*jenv)->CallObjectMethod (jenv, obj, GdaJValue__createTimestamp->mid,
+                                         gda_timestamp_get_year (ts), gda_timestamp_get_month (ts), 
gda_timestamp_get_day (ts),
+                                         gda_timestamp_get_hour (ts), gda_timestamp_get_minute (ts), 
gda_timestamp_get_second (ts));
        if ((*jenv)->ExceptionCheck (jenv))
                return NULL;
        else