Cherry-pick pull request #19022

Refs #19021 add reduction for osiris diffspec

(cherry picked from commit 56001ff)

Add patch release note

MantidQt/CustomInterfaces/src/Indirect/IndirectDiffractionReduction.cpp

@@ -125,6 +125,7 @@ void IndirectDiffractionReduction::run() {
             "Calibration and rebinning parameters are incorrect.");
         return;
       }
+      runGenericReduction(instName, mode);
     }
   } else {
     if (!validateRebin()) {

docs/source/release/v3.9.1/index.rst

@@ -9,7 +9,7 @@ Mantid 3.9.1 Release Notes
 
 This is a patch release that corrects some significant issues since :ref:`version 3.9.0 <v3.9.0>`.
 
-There is no common theme to the fixes contained in this patch, rather it is collection of small but 
+There is no common theme to the fixes contained in this patch, rather it is collection of small but
 significant fixes. Please see below for the full list of changes.
 
 Citation
@@ -44,6 +44,7 @@ Changes in this version
 * `18979 <https://www.github.com/mantidproject/mantid/pull/18979>`_ Fix delete confirmations in workspace dock
 * `18984 <https://www.github.com/mantidproject/mantid/pull/18984>`_ Abins: Correct setting numerical zero for b_tensors
 * `18995 <https://www.github.com/mantidproject/mantid/pull/18995>`_ Add bank43 to TOPAZ IDF this run cycle
+* `19022 <https://www.github.com/mantidproject/mantid/pull/19022>`_ Fix reduction for osiris diffspec
 
 
 Summary of impact
@@ -93,6 +94,8 @@ Summary of impact
 +-------+-----------------------------------------------------------------------------------+---------------------------------------------+--------------+
 | 18995 | Mantid now recognises bank 43 of TOPAZ                                            | Update IDF                                  | **low**      |
 +-------+-----------------------------------------------------------------------------------+---------------------------------------------+--------------+
+| 19022 | OSIRIS diffspec reduction now works                                               | Add back code in else statement             | **low**      |
++-------+-----------------------------------------------------------------------------------+---------------------------------------------+--------------+
 
 .. _download page: http://download.mantidproject.org