Follow JUCE_LOG_CURRENT_ASSERTION with semicolon

This allows defining JUCE_LOG_CURRENT_ASSERTION when using Visual
Studio, where escaping semicolons in the command-line is not possible.

modules/juce_core/system/juce_PlatformDefs.h

@@ -172,7 +172,7 @@ namespace juce
   // If debugging is disabled, these dummy debug and assertion macros are used..
 
   #define DBG(textToWrite)
-  #define jassertfalse                  JUCE_BLOCK_WITH_FORCED_SEMICOLON (JUCE_LOG_CURRENT_ASSERTION)
+  #define jassertfalse                  JUCE_BLOCK_WITH_FORCED_SEMICOLON (JUCE_LOG_CURRENT_ASSERTION;)
 
   #if JUCE_LOG_ASSERTIONS
    #define jassert(expression)          JUCE_BLOCK_WITH_FORCED_SEMICOLON (if (! (expression)) jassertfalse;)