[iso] fix improper size being returned by ExtractISOFile()

* The call returned the size occupied in blocks rather than the actual file size,
  leading to issues such as Rufus not being able to identify the GRUB version used
  by Ubuntu 24.04.

src/iso.c

@@ -1482,8 +1482,8 @@ int64_t ExtractISOFile(const char* iso, const char* iso_file, const char* dest_f
 			uprintf("  Error writing file %s: %s", dest_file, WindowsErrorString());
 			goto out;
 		}
-		file_length -= read_size;
-		r += read_size;
+		file_length -= buf_size;
+		r += buf_size;
 	}
 	goto out;
 
@@ -1515,8 +1515,8 @@ int64_t ExtractISOFile(const char* iso, const char* iso_file, const char* dest_f
 			uprintf("  Error writing file %s: %s", dest_file, WindowsErrorString());
 			goto out;
 		}
-		file_length -= ISO_BLOCKSIZE;
-		r += ISO_BLOCKSIZE;
+		file_length -= buf_size;
+		r += buf_size;
 	}
 
 out:

src/rufus.rc

@@ -33,7 +33,7 @@ LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
 IDD_DIALOG DIALOGEX 12, 12, 232, 326
 STYLE DS_SETFONT | DS_MODALFRAME | DS_CENTER | WS_MINIMIZEBOX | WS_POPUP | WS_CAPTION | WS_SYSMENU
 EXSTYLE WS_EX_ACCEPTFILES
-CAPTION "Rufus 4.5.2144"
+CAPTION "Rufus 4.5.2145"
 FONT 9, "Segoe UI Symbol", 400, 0, 0x0
 BEGIN
     LTEXT           "Drive Properties",IDS_DRIVE_PROPERTIES_TXT,8,6,53,12,NOT WS_GROUP
@@ -397,8 +397,8 @@ END
 //
 
 VS_VERSION_INFO VERSIONINFO
- FILEVERSION 4,5,2144,0
- PRODUCTVERSION 4,5,2144,0
+ FILEVERSION 4,5,2145,0
+ PRODUCTVERSION 4,5,2145,0
  FILEFLAGSMASK 0x3fL
 #ifdef _DEBUG
  FILEFLAGS 0x1L
@@ -416,13 +416,13 @@ BEGIN
             VALUE "Comments", "https://rufus.ie"
             VALUE "CompanyName", "Akeo Consulting"
             VALUE "FileDescription", "Rufus"
-            VALUE "FileVersion", "4.5.2144"
+            VALUE "FileVersion", "4.5.2145"
             VALUE "InternalName", "Rufus"
             VALUE "LegalCopyright", "� 2011-2024 Pete Batard (GPL v3)"
             VALUE "LegalTrademarks", "https://www.gnu.org/licenses/gpl-3.0.html"
             VALUE "OriginalFilename", "rufus-4.5.exe"
             VALUE "ProductName", "Rufus"
-            VALUE "ProductVersion", "4.5.2144"
+            VALUE "ProductVersion", "4.5.2145"
         END
     END
     BLOCK "VarFileInfo"