clang-tidy: Enable bugprone-narrowing-conversions

Modified code to address issues flagged by this check.

Tested: Build and unit tests passed successfully.

Change-Id: Idd5e3701725a833324535d29f0bfffb3ba180e88
Signed-off-by: Jayanth Othayoth <ojayanth@gmail.com>
diff --git a/dump_offload.cpp b/dump_offload.cpp
index 4958b0c..edf1bff 100644
--- a/dump_offload.cpp
+++ b/dump_offload.cpp
@@ -37,7 +37,7 @@
 void writeOnUnixSocket(const int socket, const char* buf,
                        const uint64_t blockSize)
 {
-    int numOfBytesWrote = 0;
+    ssize_t numOfBytesWrote = 0;
 
     for (uint64_t i = 0; i < blockSize; i = i + numOfBytesWrote)
     {
@@ -199,7 +199,7 @@
             // allocate memory to contain file data
             std::unique_ptr<char[]> buffer(new char[size]);
             // get file data
-            pbuf->sgetn(buffer.get(), size);
+            pbuf->sgetn(buffer.get(), static_cast<std::streamsize>(size));
             infile.close();
 
             writeOnUnixSocket(socketFD(), buffer.get(), size);