Revert faulty warning fix

Author: Ilia Alshanetsky

ext/pdo_sqlite/sqlite_statement.c

@@ -265,6 +265,10 @@ static int pdo_sqlite_stmt_get_col(pdo_stmt_t *stmt, int colno, char **ptr, unsi
 		case SQLITE3_TEXT:
 			*ptr = (char*)sqlite3_column_text(S->stmt, colno);
 			*len = sqlite3_column_bytes(S->stmt, colno);
+			if (*len) {
+				/* sqlite3.h says "the NUL terminator is included in the byte count for TEXT values" */
+				*len--; /* do not remove this, even though it generates a warning */
+			}
 			return 1;
 
 		default: