rocr: Add proper file descriptor cleanup

Ensure file descriptor 'in' is properly closed in error cases
when calling _lseek() during readFrom() operations.
Fix potential resource leak when errors occur during file operations.

Signed-off-by: Alysa Liu <Alysa.Liu@amd.com>


[ROCm/ROCR-Runtime commit: 167602edfb]

projects/rocr-runtime/runtime/hsa-runtime/libamdhsacode/amd_elf_image.cpp

@@ -213,10 +213,19 @@ namespace elf {
 #else // _WIN32
       int in = _open(filename.c_str(), O_RDONLY);
       if (in < 0) { return perror("open failed"); }
-      if (_lseek(in, 0L, SEEK_END) < 0) { return perror("lseek failed"); }
+      if (_lseek(in, 0L, SEEK_END) < 0) { 
+        _close(in);
+        return perror("lseek failed"); 
+      }
       off_t size;
-      if ((size = _lseek(in, 0L, SEEK_CUR)) < 0) { return perror("lseek(2) failed"); }
-      if (_lseek(in, 0L, SEEK_SET) < 0) { return perror("lseek(3) failed"); }
+      if ((size = _lseek(in, 0L, SEEK_CUR)) < 0) { 
+        _close(in);
+        return perror("lseek(2) failed"); 
+      }
+      if (_lseek(in, 0L, SEEK_SET) < 0) { 
+        _close(in);
+        return perror("lseek(3) failed"); 
+      }
       if (_lseek(d, 0L, SEEK_SET) < 0) { return perror("lseek(3) failed"); }
       ssize_t written;
       do {