FS-11903: Fix errors reported by PVS-Studio Static Code Analyzer for libs/esl

libs/esl/src/cJSON.c

@@ -295,10 +295,7 @@ static unsigned char* ensure(printbuffer * const p, size_t needed, const interna
 
             return NULL;
         }
-        if (newbuffer)
-        {
-            memcpy(newbuffer, p->buffer, p->offset + 1);
-        }
+        memcpy(newbuffer, p->buffer, p->offset + 1);
         hooks->deallocate(p->buffer);
     }
     p->length = newsize;
@@ -890,11 +887,6 @@ fail:
         hooks->deallocate(buffer->buffer);
     }
 
-    if (printed != NULL)
-    {
-        hooks->deallocate(printed);
-    }
-
     return NULL;
 }