SPV: Fix an issue related with imageStore() for 2DMS.
diff --git a/SPIRV/GlslangToSpv.cpp b/SPIRV/GlslangToSpv.cpp
index e1babc1..284bfee 100755
--- a/SPIRV/GlslangToSpv.cpp
+++ b/SPIRV/GlslangToSpv.cpp
@@ -1889,15 +1889,19 @@
         auto opIt = arguments.begin();
         operands.push_back(*(opIt++));
         operands.push_back(*(opIt++));
-        if (node->getOp() == glslang::EOpImageStore)
-            operands.push_back(*(opIt++));
         if (node->getOp() == glslang::EOpImageLoad) {
             if (sampler.ms) {
                 operands.push_back(spv::ImageOperandsSampleMask);
-                operands.push_back(*(opIt++));
+                operands.push_back(*opIt);
             }
             return builder.createOp(spv::OpImageRead, convertGlslangToSpvType(node->getType()), operands);
         } else if (node->getOp() == glslang::EOpImageStore) {
+            if (sampler.ms) {
+                operands.push_back(*(opIt + 1));
+                operands.push_back(spv::ImageOperandsSampleMask);
+                operands.push_back(*opIt);
+            } else
+                operands.push_back(*opIt);
             builder.createNoResultOp(spv::OpImageWrite, operands);
             return spv::NoResult;
         } else {