TgaImageConverter: update error message.

src/MagnumPlugins/TgaImageConverter/Test/TgaImageConverterTest.cpp

@@ -78,7 +78,7 @@ void TgaImageConverterTest::wrongFormat() {
 
     const auto data = TgaImageConverter().exportToData(image);
     CORRADE_VERIFY(!data);
-    CORRADE_COMPARE(out.str(), "Trade::TgaImageConverter::convertToData(): unsupported image format ColorFormat::RG\n");
+    CORRADE_COMPARE(out.str(), "Trade::TgaImageConverter::exportToData(): unsupported color format ColorFormat::RG\n");
 }
 
 void TgaImageConverterTest::wrongType() {
@@ -89,7 +89,7 @@ void TgaImageConverterTest::wrongType() {
 
     const auto data = TgaImageConverter().exportToData(image);
     CORRADE_VERIFY(!data);
-    CORRADE_COMPARE(out.str(), "Trade::TgaImageConverter::convertToData(): unsupported image type ColorType::Float\n");
+    CORRADE_COMPARE(out.str(), "Trade::TgaImageConverter::exportToData(): unsupported color type ColorType::Float\n");
 }
 
 void TgaImageConverterTest::data() {

src/MagnumPlugins/TgaImageConverter/TgaImageConverter.cpp

@@ -59,12 +59,12 @@ Containers::Array<unsigned char> TgaImageConverter::doExportToData(const ImageRe
        image.format() != ColorFormat::Red)
     #endif
     {
-        Error() << "Trade::TgaImageConverter::convertToData(): unsupported image format" << image.format();
+        Error() << "Trade::TgaImageConverter::exportToData(): unsupported color format" << image.format();
         return nullptr;
     }
 
     if(image.type() != ColorType::UnsignedByte) {
-        Error() << "Trade::TgaImageConverter::convertToData(): unsupported image type" << image.type();
+        Error() << "Trade::TgaImageConverter::exportToData(): unsupported color type" << image.type();
         return nullptr;
     }