Fix a few compiler warnings

Signed-off-by: falkTX <falktx@falktx.com>

source/backend/engine/CarlaEngineOscSend.cpp

@@ -216,7 +216,7 @@ void CarlaEngineOsc::sendPluginProgramCount(const CarlaPluginPtr& plugin) const
     CARLA_SAFE_ASSERT_RETURN(plugin != nullptr,);
     carla_stdout("CarlaEngineOsc::sendPluginDataCount(%p)", plugin.get());
 
-    char targetPath[std::strlen(fControlDataTCP.path)+7];
+    char targetPath[std::strlen(fControlDataTCP.path)+8];
     std::strcpy(targetPath, fControlDataTCP.path);
     std::strcat(targetPath, "/pcount");
     try_lo_send(fControlDataTCP.target, targetPath, "iii",

source/frontend/dialogs/aboutdialog.cpp

@@ -28,7 +28,7 @@ AboutDialog::AboutDialog(QWidget* const parent,
                            "<br>Copyright (C) 2011-2025 falkTX<br>"
                            "").arg(CARLA_VERSION_STRING).arg(extraInfo));
 
-    if (ui.about->palette().color(QPalette::Background).blackF() < 0.5)
+    if (ui.about->palette().color(QPalette::Window).blackF() < 0.5)
     {
         ui.l_icons->setPixmap(QPixmap(":/bitmaps/carla_about_black.png"));
         ui.ico_example_edit->setPixmap(QPixmap(":/bitmaps/button_file-black.png"));

source/utils/CarlaString.hpp

@@ -758,13 +758,14 @@ public:
         }
 
         // we have some data ourselves, reallocate to add the new stuff
-        char* const newBuf = (char*)realloc(fBuffer, fBufferLen + strBufLen + 1);
+        char* const newBuf = (char*)realloc(fBufferAlloc ? fBuffer : nullptr, fBufferLen + strBufLen + 1);
         CARLA_SAFE_ASSERT_RETURN(newBuf != nullptr, *this);
 
         std::memcpy(newBuf + fBufferLen, strBuf, strBufLen + 1);
 
         fBuffer = newBuf;
         fBufferLen += strBufLen;
+        fBufferAlloc = true;
 
         return *this;
     }