[BUGFIX] In get_virtual_sec_size: protect against div by 0 if section…

… alignment is not filled

libpeconv/src/pe_hdrs_helper.cpp

@@ -554,12 +554,12 @@ DWORD peconv::get_virtual_sec_size(IN const BYTE* pe_hdr, IN const PIMAGE_SECTIO
     //TODO: calculate real size, round up to Virtual Alignment
     DWORD alignment = peconv::get_sec_alignment((const PBYTE)pe_hdr, false);
     DWORD vsize = sec_hdr->Misc.VirtualSize;
+    if (alignment != 0) {
+        DWORD units = vsize / alignment;
+        if ((vsize % alignment) > 0) units++;
 
-    DWORD units = vsize / alignment;
-    if ((vsize % alignment) > 0) units++;
-
-    vsize = units * alignment;
-
+        vsize = units * alignment;
+    }
     DWORD image_size = peconv::get_image_size(pe_hdr);
     //if it is bigger than the image size, use the size from the headers
     if ((sec_hdr->VirtualAddress + vsize) > image_size) {