Add a gerber test file

remove a few minor coverity warnings

gerbview/gerber_test_files/Ucamco_Polarities_and_Apertures.gbr

@@ -0,0 +1,89 @@
+G04 Ucamco ex. 2: Shapes*
+%FSLAX26Y26*%
+%MOIN*%
+%TF.Part,Other,sample*%
+%LPD*%
+G04 Define Apertures*
+%AMTARGET125*
+6,0,0,0.125,.01,0.01,3,0.003, 0.150,0*%
+%AMTHERMAL80*
+7,0,0,0.080,0.055,0.0125,45*%
+%ADD10C,0.01*%
+%ADD11C,0.06*%
+%ADD12R,0.06X0.06*%
+%ADD13R,0.04X0.100*%
+%ADD14R,0.100X0.04*%
+%ADD15O,0.04X0.100*%
+%ADD16P,0.100X3*%
+%ADD18TARGET125*%
+%ADD19THERMAL80*%
+G04 Start image generation*
+D10*
+X0Y250000D02*
+G01*
+X0Y0D01*
+X250000Y0D01*
+X1000000Y1000000D02*
+X1500000D01*
+X2000000Y1500000D01*
+X2500000D02*
+Y1000000D01*
+D11*
+X1000000Y1000000D03*
+X2000000D03*
+X2500000D03*
+Y1500000D03*
+X2000000D03*
+D12*
+X1000000Y1500000D03*
+D13*
+X3000000Y1500000D03*
+D14*
+Y1250000D03*
+D15*
+Y1000000D03*
+D10*
+X3750000Y1000000D02*
+G75*
+G03*
+X3750000Y1000000I250000J0D01*
+D16*
+X3400000Y1000000D03*
+X3500000Y900000D03*
+D10*
+G36*
+X500000Y2000000D02*
+G01*
+Y3750000D01*
+X3750000D01*
+Y2000000D01*
+X500000D01*
+G37*
+D18*
+X0Y3875000D03*
+X3875000Y3875000D03*
+%LPC*%
+G36*
+X1000000Y2500000D02*
+Y3000000D01*
+G74*
+G02*
+X1250000Y3250000I250000J0D01*
+G01*
+X3000000D01*
+G75*
+G02*
+X3000000Y2500000I0J-375000D01*
+G01*
+X1000000D01*
+G37*
+%LPD*%
+D10*
+X1500000Y2875000D02*
+X2000000D01*
+D11*
+X1500000Y2875000D03*
+X2000000D03*
+D19*
+X2875000Y2875000D03*
+M02*

pcbnew/specctra.cpp

@@ -842,6 +842,7 @@ void SPECCTRA_DB::doKEEPOUT( KEEPOUT* growth )
 
         case T_polyline_path:
             tok = T_path;
+            // Fall through
         case T_path:
         case T_polygon:
             if( growth->shape )
@@ -936,6 +937,7 @@ void SPECCTRA_DB::doWINDOW( WINDOW* growth )
 
         case T_polyline_path:
             tok = T_path;
+            // Fall through
         case T_path:
         case T_polygon:
             if( growth->shape )
@@ -2053,6 +2055,7 @@ void SPECCTRA_DB::doSHAPE( SHAPE* growth )
         {
         case T_polyline_path:
             tok = T_path;
+            // Fall through
         case T_rect:
         case T_circle:
         case T_path:

pcbnew/tools/position_relative_tool.cpp

@@ -48,11 +48,7 @@ TOOL_ACTION PCB_ACTIONS::positionRelative( "pcbnew.PositionRelative.positionRela
 
 TOOL_ACTION PCB_ACTIONS::selectpositionRelativeItem(
         "pcbnew.PositionRelative.selectpositionRelativeItem",
-        AS_GLOBAL,
+        AS_GLOBAL, 0, "", "", nullptr );
-        0,
-        "",
-        "",
-        nullptr );
 
 
 POSITION_RELATIVE_TOOL::POSITION_RELATIVE_TOOL() :