Avoid compiler warning in w32proc.c

* src/w32proc.c (w32_executable_type): Avoid compiler warnings
about potential NULL pointer dereferencing.

1 files changed, 12 insertions, 7 deletions

diff --git a/src/w32proc.c b/src/w32proc.c
index 8e878e6ef3e..75e345a525a 100644
--- a/src/w32proc.c
+++ b/src/w32proc.c
@@ -1776,22 +1776,27 @@ w32_executable_type (char * filename,
           if (data_dir)
             {
               /* Look for Cygwin DLL in the DLL import list. */
-              IMAGE_DATA_DIRECTORY import_dir =
-                data_dir[IMAGE_DIRECTORY_ENTRY_IMPORT];
+              IMAGE_DATA_DIRECTORY import_dir
+                = data_dir[IMAGE_DIRECTORY_ENTRY_IMPORT];
 
               /* Import directory can be missing in .NET DLLs.  */
               if (import_dir.VirtualAddress != 0)
                 {
+                  IMAGE_SECTION_HEADER *section
+                    = rva_to_section (import_dir.VirtualAddress, nt_header);
+                  if (!section)
+                    emacs_abort ();
+
                   IMAGE_IMPORT_DESCRIPTOR * imports =
-                    RVA_TO_PTR (import_dir.VirtualAddress,
-                                rva_to_section (import_dir.VirtualAddress,
-                                                nt_header),
+                    RVA_TO_PTR (import_dir.VirtualAddress, section,
                                 executable);
 
                   for ( ; imports->Name; imports++)
                     {
-                      IMAGE_SECTION_HEADER * section =
-                        rva_to_section (imports->Name, nt_header);
+                      section = rva_to_section (imports->Name, nt_header);
+                      if (!section)
+                        emacs_abort ();
+
                       char * dllname = RVA_TO_PTR (imports->Name, section,
                                                    executable);