Fix Klocwork issues (#281)

* delete SyclProgram;
* DynamicLibHelper operator= delete.

Author: PokhodenkoSA

CONTRIBUTING.md

@@ -6,7 +6,7 @@
 
 We use [clang-format](https://clang.llvm.org/docs/ClangFormat.html) code formatter.
 
-Install: `pip install clang`
+Install: `conda install clang-tools`
 
 - Revision: `10.0.1`
 - See the default configuration used by dpCtl in `.clang-format`.

dpctl-capi/helper/include/dpctl_dynamic_lib_helper.h

@@ -46,6 +46,7 @@ namespace dpctl
 class DynamicLibHelper final
 {
 public:
+    DynamicLibHelper &operator=(const DynamicLibHelper &) = delete;
     DynamicLibHelper() = delete;
     DynamicLibHelper(const DynamicLibHelper &) = delete;
     DynamicLibHelper(const char *libName, int flag)

dpctl-capi/source/dpctl_sycl_program_interface.cpp

@@ -269,9 +269,11 @@ DPCTLProgram_CreateFromOCLSource(__dpctl_keep const DPCTLSyclContextRef Ctx,
         break;
     case backend::level_zero:
         std::cerr << "CreateFromSource is not supported in Level Zero.\n";
+        delete SyclProgram;
         return nullptr;
     default:
         std::cerr << "CreateFromSource is not supported in unknown backend.\n";
+        delete SyclProgram;
         return nullptr;
     }
 }