Code cleanup

modified:   app/lib/ntext.cpp
	modified:   app/main/lexer.cpp
	modified:   app/system/language.cpp
	modified:   app/system/language_posix.cpp
	modified:   app/system/preferences_stdc.cpp
	modified:   lib/real/pow.c
	modified:   lib/platform.h

app/main/lexer.cpp

@@ -45,7 +45,7 @@ Lexer::~Lexer()
     delete [] input;
 
     if (first != NOMEM) {
-        delete first;
+        delete [] first;
     }
 }
 
@@ -205,7 +205,7 @@ bool Lexer::GetDigitValue()
     *(text + len) = '\0';
 
     current = new Token(current, symnumber, text, pos);
-    delete text;
+    delete [] text;
     delete number;
 
     pos += len;