[LPT] Klocwork fixes (#5981)

inference-engine/src/low_precision_transformations/include/low_precision/transformer.hpp

@@ -32,6 +32,7 @@ public:
     LowPrecisionTransformations() {}
     LowPrecisionTransformations(
         const std::map<std::string, LayerTransformationPtr>& branchSpecificTransformations,
+        const std::map<std::string, LayerTransformationPtr>& decompositionTransformations,
         const std::map<std::string, LayerTransformationPtr>& transformations,
         const std::map<std::string, std::vector<std::pair<std::string, LayerTransformationPtr>>>& cleanupTransformations,
         const std::vector<StandaloneCleanup>& standaloneCleanupTransformations);

inference-engine/src/low_precision_transformations/src/convert.cpp

@@ -24,6 +24,10 @@ void ConvertTransformation::registerMatcherIn(GraphRewrite &pass, Transformation
 
 bool ConvertTransformation::transform(TransformationContext& context, ngraph::pattern::Matcher &m) const {
     std::shared_ptr<opset1::Convert> convert = as_type_ptr<opset1::Convert>(m.get_match_root());
+    if (!convert) {
+        return false;
+    }
+
     if (!canBeTransformed(context, convert)) {
         return false;
     }

inference-engine/src/low_precision_transformations/src/transformer.cpp

@@ -76,10 +76,12 @@ namespace low_precision {
 
 LowPrecisionTransformations::LowPrecisionTransformations(
     const std::map<std::string, LayerTransformationPtr>& branchSpecificTransformations,
+    const std::map<std::string, LayerTransformationPtr>& decompositionTransformations,
     const std::map<std::string, LayerTransformationPtr>& transformations,
     const std::map<std::string, std::vector<std::pair<std::string, LayerTransformationPtr>>>& cleanupTransformations,
     const std::vector<StandaloneCleanup>& standaloneCleanupTransformations) :
     branchSpecificTransformations(branchSpecificTransformations),
+    decompositionTransformations(decompositionTransformations),
     transformations(transformations),
     cleanupTransformations(cleanupTransformations),
     standaloneCleanupTransformations(standaloneCleanupTransformations) {}