Play again with coverity annotation

The documentation is scarce and it is difficult to see what notation
is right.

src/insets/InsetBibitem.cpp

@@ -70,7 +70,7 @@ InsetBibitem::~InsetBibitem()
 	if (isBufferLoaded())
 		/* Coverity believes that this may throw an exception, but
 		 * actually this code path is not taken when buffer_ == 0 */
-		// coverity[exn_spec_violation]
+		// coverity[fun_call_w_exception]
 		buffer().invalidateBibinfoCache();
 }
 

src/insets/InsetBibtex.cpp

@@ -70,9 +70,9 @@ InsetBibtex::~InsetBibtex()
 	if (isBufferLoaded()) {
 		/* Coverity believes that this may throw an exception, but
 		 * actually this code path is not taken when buffer_ == 0 */
-		// coverity[exn_spec_violation]
+		// coverity[fun_call_w_exception]
 		buffer().invalidateBibfileCache();
-		// coverity[exn_spec_violation]
+		// coverity[fun_call_w_exception]
 		buffer().removeBiblioTempFiles();
 	}
 }

src/insets/InsetCitation.cpp

@@ -57,7 +57,7 @@ InsetCitation::~InsetCitation()
 	if (isBufferLoaded())
 		/* Coverity believes that this may throw an exception, but
 		 * actually this code path is not taken when buffer_ == 0 */
-		// coverity[exn_spec_violation]
+		// coverity[fun_call_w_exception]
 		buffer().removeBiblioTempFiles();
 }