Initialize column size to 0 to deal with a potential UnixODBC bug on 64-bit systems.

(closes issue #18295)
 Reported by: pruiz


git-svn-id: https://origsvn.digium.com/svn/asterisk/branches/1.4@310140 65c4cc65-6c06-0410-ace0-fbb531ad65f3

apps/app_voicemail.c

@@ -2473,6 +2473,7 @@ static int retrieve_file(char *dir, int msgnum)
 			fprintf(f, "[message]\n");
 		for (x=0;x<colcount;x++) {
 			rowdata[0] = '\0';
+			colsize = 0;
 			collen = sizeof(coltitle);
 			res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen, 
 						&datatype, &colsize, &decimaldigits, &nullable);

res/res_config_odbc.c

@@ -223,6 +223,7 @@ static struct ast_variable *realtime_odbc(const char *database, const char *tabl
 	}
 	for (x = 0; x < colcount; x++) {
 		rowdata[0] = '\0';
+		colsize = 0;
 		collen = sizeof(coltitle);
 		res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen, 
 					&datatype, &colsize, &decimaldigits, &nullable);
@@ -377,6 +378,7 @@ static struct ast_config *realtime_multi_odbc(const char *database, const char *
 		}
 		for (x=0;x<colcount;x++) {
 			rowdata[0] = '\0';
+			colsize = 0;
 			collen = sizeof(coltitle);
 			res = SQLDescribeCol(stmt, x + 1, (unsigned char *)coltitle, sizeof(coltitle), &collen, 
 						&datatype, &colsize, &decimaldigits, &nullable);