- merge whitespaces before comparing Dehacked texts

With introduction of localization support, several strings are no longer identical to the original messages
Double spaces were removed, and letter case was changed
The latter is already handled, extra whitespaces are now deleted to deal with the former

https://forum.zdoom.org/viewtopic.php?t=69236

src/gamedata/d_dehacked.cpp

@@ -2191,22 +2191,18 @@ static int PatchText (int oldSize)
 	}
 	newSize = atoi (temp);
 
-	oldStr = new char[oldSize + 1];
-	newStr = new char[newSize + 1];
-
-	if (!oldStr || !newStr)
-	{
-		Printf ("Out of memory.\n");
-		goto donewithtext;
-	}
-
+	FString oldStrData, newStrData;
+	oldStr = oldStrData.LockNewBuffer(oldSize + 1);
+	newStr = newStrData.LockNewBuffer(newSize + 1);
+
 	good = ReadChars (&oldStr, oldSize);
 	good += ReadChars (&newStr, newSize);
 
+	oldStrData.UnlockBuffer();
+	newStrData.UnlockBuffer();
+
 	if (!good)
 	{
-		delete[] newStr;
-		delete[] oldStr;
 		Printf ("Unexpected end-of-file.\n");
 		return 0;
 	}
@@ -2271,11 +2267,11 @@ static int PatchText (int oldSize)
 	const char *str;
 	do
 	{
+		oldStrData.MergeChars(' ');
 		str = EnglishStrings.MatchString(oldStr);
 		if (str != NULL)
 		{
-			FString newname = newStr;
-			TableElement te = { LumpFileNum, { newname, newname, newname, newname } };
+			TableElement te = { LumpFileNum, { newStrData, newStrData, newStrData, newStrData } };
 			DehStrings.Insert(str, te);
 			EnglishStrings.Remove(str);	// remove entry so that it won't get found again by the next iteration or  by another replacement later
 			good = true;
@@ -2289,11 +2285,6 @@ static int PatchText (int oldSize)
 	}
 
 donewithtext:
-	if (newStr)
-		delete[] newStr;
-	if (oldStr)
-		delete[] oldStr;
-
 	// Fetch next identifier for main loop
 	while ((result = GetLine ()) == 1)
 		;